Lynn is skippable (unless you're a fan of China dress girls, I guess?), since Gina is perfectly fine and monks are niche already.

Charlotte is mostly skippable if you have Horus, but Charlotte is also way cuter, so...

Granted, I'm also dreading the grind for Charlotte, since she was impossibly difficult to CR during her event, and I only just happened to luck out on a CR the one time she dropped for me. About the only silver lining is that her map here drops plat fairies, so I can try freeing up some space with those...

I'd also like to try for one more Odette, even if I'll never use her (because Solano, Garania, mincost Mehlis, etc.).