I don’t think each X-men needs an origin story or separate introduction. I think Storm will probably get a solo movie. It checks too many “inclusion” boxes not to. You can throw Rouge’s intro in the last Captain Marvel movie. Throw Wolverine in a Hulk movie(Hulk has increased healing, he’s not going to have 1 arm forever.) And If Fiege is the old school X-Man fan he says he is, he’s probably anti Cyclops like we all was in the 90s.
IMO I don’t want to see that anyway.
Bring on the whole team and let’s do this Secret Wars or X of Swords.