EDIT: I don't mean solo books. I just meant "characters that need to be in a book period". Including as members of a team.
Polaris, Rachel, Nightcrawler, (Arch)Angel, Monet, Dazzler, Frenzy, Cuckoos
Name more if you wish and feel free to propose ideas as well since Marvel seems to have no interest atm
At least Mystique is on the Council and I guess some of these characters are indeed cameoing around but what the hell is up with giving Pyro, Black Tom, Healer, Orphan Maker, Nanny, Scalphunter, Mondo, ongoings but not the above mentioned?