I don't care if it sounds "hipster starter pack", I'd really rather some obscure mutant with an interesting gimmick (or dynamic with one or more of the girls already in the game) than Psylock. It will be decades - decades I tell you! - before I get over the "fucking Jean but not from behind" pose. If I want to play a game with the menace of unforgettable crabs looming over me I'll fire up Kenshi.
Maybe I should be careful what I wish for. Might be in a few years time when the mutant after Psylock comes out I discover [NEWMUTANT] is obscure, has a gimmick just like I said wanted but she has got all the sex appeal of obese politicised rhubarb...