i like the fights a lot at a base level but for end game content I find them a bit too shallow. I think all they really need is less brute-forcing of the fight and a few more mechanics to it that let more/most frames work. i had an idea for it while re-running the boreal fight this morning:

• tie damage attentuation to special mobs that spawn periodically in the area, let's say deacons; as the archon attenuates, deacons spawn in, if you kill them then the archon will reset their attenuation briefly. (opens up weapon variety, as long as you can kill deacons reliably you can dps the boss down.)

• deacons can operate like they do in the mid-phase where they become immune to damage if they get surrounded by too many friends, which lets frames who excel at clearing adds have more of a role to play in the fight, so even if abilities won't nuke the Archon directly, a frame like Ember who can easily wipe tiles would still be able to bust down the crowd and weaken the Archon. It'd also let you bring a sniper and pop them before they can connect to a crowd

I think that'd be all you'd really need to spice up the fights a little both for solo and team play, something that justifies the hordes of adds and also occasionally demands you split attention from the main boss. personally I'd also like end game content to include some of the other modes we've been asked to farm, so if we were ever given an extra phase of the boss that included the necramechs or the operator I'd be excited for it, but I know that this is just filler content before duviri

Thoughts?