My personal list I'd like to see, besides the ones I know like Magik:
Firestar
Has Firestar been getting more of a push in the comics? I've been hearing her name pop up more.
It was not on my bingo card, I'll tell you that much
While I wouldn't bet on Cecilia being the 5th woman and there are a couple characters I disagree with, it's a very solid list. As Shiny said, the game is stopping way before Hope but it's also stopping before the Cuckoos and Pixie. If you want some pointers to complete your list, think of mutant girls that existed between Phoenix Saga and Onslaught, that can probably help find the missing spots.
Stacy X is... a choice, btw. But I support the Blink movement, even if her and Pixie gonna create a lot of drama with our fuzzy besto friendo.
Fair enough. My thinking with Cecilia was the school doctor/nurse thing you often see in visual novel games... or at least the visual novel games I play.
As for Stacy X, honestly that's just based on her origin and powers. I'm not as familiar with her past that. Heck I had to look up Armor and Mirage to remind/familiarize myself with them.
Good call on Mirage, btw, I kept thinking her name was Thunderbird, but that's a different X-Men.
So let's reshape the list a bit based on feedback:
Confirmed/In Game:
Laura
Jean
Rogue
Storm
Good chance given their ties to the X-Men:
Kitty
Jubilee
Magik
Emma Frost
Mystique
Betsy Braddock/Kwannon/Psylocke (however the hell you all manage that)
A bit more obscure, but could be in:
Firestar
Armor
Mirage
Boom Boom
Wolfsbane
Dazzler
Domino
Polaris
Lady Deathstrike
Marrow
Blink
Pixie
Superheroines with ties to mutants/X-Men:
Scarlet Witch
Warbird/Captain Marvel/Carol Danvers