I'm down to three of them that I can't beat (FINALLY got a proper clear of C50). Haven't tried them a TON yet because of how much I was running C50, but I know I haven't beaten them yet, anyway, ha.

• C45 – what's an optimal team for this? I've been tried with BJ and DMeta, feels like both hit like wet noodles without access to their killers/7Cs. Plus both have garbage RCV, since even with I&I on-team you still have to wait for her skill to be up. I've been co-oping main/alt for this – would it be easier solo, so sub skills charge faster?
  
• C48 – I feel like this is probably PSI and I'll get it eventually, but any tips are welcome (key subs/inherits, requires latents, etc). I definitely know I need a defense break for Gaia.
  
• C49 – I feel like this is probably PSI and I'll get it eventually, but any tips are welcome (key subs/inherits, requires latents, etc). I definitely learned I need a Fujin for Athena, but haven't gotten to Noah yet to know what she needs.
  

DMeta team is DMeta/Planar/DMeta/I&I/flex (second DMeta also flex, I just had to run them to clear C50). Identical on main/alt.
BJ team is BJ/Ryune/Ameno/flex(currently Odindra)/Aife on alt, similar on main but with Ryune as Skuld and Aife as base Suou.

Can also run Anubhoira, Gronia, RKami, Verse, Ameno, Kaede, Rikuu (would he be good for C45, maybe? free movetime shield?)... and various other things if you want to mention.

Thanks for any help!