https://exvius.gamepedia.com/Revitalised_Role_Rankings_by_Suede

Short summaries

BerylBeryl: His kit is all over the place, so it would be best to look at the parts individually to better understand him. As a breaker, he performs reasonably well, but suffers in his opening turns; this can be remedied by bringing along Sylvie, Karlette or Roy (more on that to follow). As a magic tank, he's not remarkable at this point, akin to a gutted Basch; Beryl's cooldowns causing self sacrifice or removing buffs make them unsuitable for use in this role. As a chainer, his damage isn't the worst for a mage, but also unremarkable.

In short, I don't think any of Beryl's roles perform outstandingly well with each other compared to other tanks, breakers or mages, but you can make him work.

EllesperisEllesperis: Not quite a top damage dealer, but still pulling her weight. Ellesperis' new-found imbues, two-handed TMR option, and will to live make her far less obnoxious to use optimally than before. I was going to fault her initially for lacking Bolting Strike partners who match her elements and penchant for triple skill, but then Elena came along. Regardless, a pair of Ellesperises work fine, and can provide a good deal of emergency support between them via barriers and blood twirling.

MyraMyra: The unit that needed the least love out of the fan-designed units, but perhaps the one that came out on top. New additions and alterations to her kit make her feel like a happy medium between Aerith and Folka combined with her own bag of tricks. Myra does have some small holes in her kit, but overall, I feel like she's the most versatile and competent healer right now.

CirceCirce: Can I just say she's Mediena but better? Like her, Circe still suffers from realistic non-dupe options, but there are a few possibilities on the horizon. Notably: upgraded Christine for quad absolute zero (fingers crossed that her uptime aligns), and CG Dark Fina for quad earth chaos wave along with weirdos like Exdeath and Xande. Disregarding non-dupes, Circe has great elemental flexibility, with her only real drawback being the double-edged sword of Ouroboros and Premonition's attack typing.

MalphasieMalphasie: Risen from the ashes, Malphasie's damage is now among the top, around Red XIII's. Her cooldowns and support skills are much more flexible now with the addition of a W skill; Feast for Crows in particular interests me as it can enable some obnoxious stalling. As Malphasie is currently wanting to spam W bolting and her LB, she lacks dedicated damage dealers that match her, but can be supported with non-dupes via Sylvie's granted chains, or Beryl/Myra's innate skills.

CG CharlotteSacred Shield Charlotte: Straight up magic tank power creep. Chow and White Knight Noel still have their niches for providing healing and beefier provoke tanking, but Sacred Shield Charlotte's monstrous LB alone is reason enough to consider her #1. A good buff on demand, provoking capabilities (including passive), support chains, and some other miscellaneous utility push her further into the spotlight.

YuffieYuffie: More or less a different flavour of Red XIII. That is, a strong SR chainer with good support skills for a damage dealer and generous elemental variety. While Yuffie does have access to other chain families, the damage dropoff makes them a hefty compromise. When paired with a dupe and LB damage boosting materia, she also has the advantage of significant burst damage, something that Red XIII was somewhat lacking in.

ZackZack: Similar to Regina in raw power, but without her annoying caveats of MP usage and squishyness. Zack does suffer somewhat due to his non-elemental TMR weapon, but can live without an external imbue by dropping it for weapons like Asterisk or parameter Excalibur. Not much else to say about him.

RoyRoy: His new cooldown ability is pretty great for dealing with content that's over in 5 turns, so that's cute. For anything longer, you're still stuck with old Roy as an inflexible buffer who isn't breaking as hard or as consistently as you'd like. There is a case to be made for him compensating for units like Basch, Beryl and Beatrix (I'm sensing a pattern...) who either have weaker breaks on their first turns or are otherwise preoccupied; unfortunately, I don't think this synergy is exactly good, it's more like what you'd have to do to even justify running Roy.

EileenAileen: Really funny joke Alim played on Aileen by giving her the hot new meta chain skill, but with a mod worse than her old chain skill from almost a year ago. This newfound power can be used to make Aileen into a weird support chainer who can entrust and provide godawful damage. Global made this joke even funnier by giving triple access to everyone worth a damn with SR, so Aileen suffers even more. Happy 3rd anniversary!

ElenaElena: Fantastic damage dealer. Physical damage dealers post Esther have all been sidegrades to her at best, and downgrades at worst; Elena feels like the first unit to truly beat her, though not by a margin anywhere near as wide as Esther was outdoing the units prior to her own release. Elena's stats make her bulky across the board, she has strong elemental versatility (with a damage drop when ice/light is not used), and her ability to buff while still providing great damage is unmatched, especially with a dupe.

Slight nitpick, but her imperils are a bit weaker than other meta damage dealers: 75% on key turns with ice/light, and 50% on less important turns, or all the time with water/lightning. You can offset this with supports like Summer Fina & Lid, but it isn't necessary for Elena to perform well with her preferred elements, and not essential for the other two.

MorganaMorgana: Finally, a mage more delusional than Fina. Dupe Morganas do a bit more damage than Summer Folka & Citra, but nothing to write home about. While this does make her viable in theory against the upcoming Scorn of Bloody Moon, it does leave her in the dust for other content with her mediocre damage against targets that don't use mitigation. Additionally, her support kit is paper thin, making her hard to justify running when damage falls off. Her elements and chain families are all over the place, so she can play chain buddy with other units if you like. It's nice to have options, but it doesn't automatically make her good, especially when her own ideal rotation doesn't line up with others. The sacrifices she has to make in the Morgana/Elena duo alone is quite telling.

RiveraRivera: Absolute hot meme unit. Rivera's strengths extend beyond OTKO potention into enabling 100% evasion units to not need cover/provoke, and to be able to spend their own actions elsewhere. Viktor Marchenko, Marquis de Léon and Liquid Metal Slime are the exceptions in terms of physical provoke tanks who don't have a cover skill, but they're all a bit questionable.

Best use case for Rivera is somewhat questionable. When the stars align: fighting a foe she can buff killers against, buff LB damage for her allies that care about it, set provoke/cover to a unit to allow them to use their own kit, and providing either main or off-healing. And mirage when relevant, I guess. I don't think she's ever going to be "meta", but I'm looking forward to putting her in teams.

Future HopeNeverending Hope: On paper, Neverending Hope looks kind of like a clunkier pre-awakening Maritime Strategist Nichol with some random stuff thrown in for funsies. While that's not far from the truth, I feel like we're at the stage in the game where non-dedicated units can realistically compensate for other roles without being a liability or weird niche strategy. For example, burning the Defying Destiny cooldown on turn 1, and then allowing Sieghard or Sacred Shield Charlotte to use their LB to reapply mitigation so Neverending Hope doesn't have to rely on his weaker on demand buff. With that mindset, you do have an interesting buffer with dispelga on a W skill, emergency breaks, imbues, strong imperil for burst, and the ability to meaningfully contribute to damage with Last Resort. Not exactly pushing the envelope, but not bad either.

CG LightningRadiant Lightning: Lots of global changes across the board resulted in an easy to use and powerful damage dealer. Elena may have the bulk, versatility and support power, but Radiant Lightning has the raw damage output. Her only notable flaw in this regard is that her cooldowns and the mod boosts they grant last a full 10 turns; if she dies, her damage is going to drop significantly, and there's nothing you can do about it but twiddle your thumbs. For some reason, Radiant Lightning can also technically work as a breaker, but it's incredibly gimmicky beyond using her Ravager cooldown in emergencies.

Latent abilities and ability awakenings

CG LasswellPyro Glacial Lasswell: Narrowly beating Radiant Lightning in release timing for the position of first relevant physical dual wield chainer since Zeno. Though he can't burst as hard, his damage is up there with the big boys, and can be amplified further with external support. Namely, an ATK buff and an imperil to reduce his own setup turns. Even without those, he's still a serious contender.

CG JakeNameless Gunner Jake: With the ability to consistently use his LB every other turn without his buffing cooldowns or imbues restricting that, Nameless Gunner Jake is far less annoying to use now and has actual flexibility in rotation and usage. If you're not in a turn-by-turn damage race, this definitely gives him the edge over Squall's lower burst, and a viable alternative to Regina and Zack. Relatively speaking, this is probably the best Jake has ever looked.

CG FinaLotus Mage Fina: The new additions of W skill and a stronger Divine Veil give Lotus Mage Fina the ability to more reliably provide support beyond reraise abuse. The holes in her kit are becoming a bit more apparent with the release of new healers however, and this doesn't quite patch them all up.

CG NicholMaritime Strategist Nichol: Nice upgrades across the board, most notably improving strong mitigation uptime, MP sustain, and carving out a further niche for ice/water resist. Maritime Strategist Nichol never really got crept out of viability, but these improvements do give him more potential as a buffer.

CG LidHeavenly Technician Lid: Despite having twelve (!!) skills available for ability awakening in addition to two latent abilities, Heavenly Technician Lid hasn't fundamentally changed. Her biggest flaw of poor non-LB AoE breaks has been addressed, and she's been granted a good deal of extra bulk and LB fill power to help keep her LB up; her barebones support kit hasn't changed much, howeer. Comparatively, King Edgar of Figaro can theoretically put out stronger breaks and has better utility, but can easily be caught with his pants down if the enemy self buffs or dispels at an inopportune time.

Awakened RainAwakened Rain: Shockingly, Awakened Rain is a viable provoke tank now that Standout no longer pales in comparison to other tanks' provoke skills. Escort Leader and Scarlet Healing also assist in him having noteworthy things to do after inviting enemies to stomp his face in.

CG SakuraBlossom Sage Sakura: Not quite a dedicated buffer, but Quick Support Combo gives Blossom Sage Sakura plenty to help out with before she's ready to burst; finishers can be hard to justify slotting in, so anything like this is very much welcome in my eyes. On the other hand, a pair of Sakuras can function as respectable chainers in their own right. She's received a lot of love, honestly.

Majin FinaDark Fina: Much like Blossom Sage Sakura, Dark Fina is ostensibly a finisher with some buffing capabilities that can also be run as a chainer. Unfortunately, Dark Fina's support kit is limited, her finishing prowess much less impressive, and chaining effectively requires her to juggle multiple elements.

Summer M. FinaSeabreeze Dark Fina: Much like Blossom Sage Sakura, Seabreeze Dark Fina is ostensibly a finisher with some buffing capabilities that can also be run as a chainer. Unfortunately, Dark Fina's support kit is limited, her finishing prowess much less impressive, and chaining effectively requires her to juggle multiple elements.

...yeah, she really is a copy pasted Dark Fina still. Her chaining does suffer from less elemental mismatching and is supposedly less janky than Dark Fina's, but they're otherwise fundamentally the same.

Summer Fina & Lid 2018Summer Fina & Lid: They can buff light resist and apply regen now. Groundbreaking.

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Let me know what you think.