Cast Tessa Thompson as Storm in X-Men: Apocalypse!!
I think Tessa has the acting chops to take on this role and hold her own with already established 'younger' versions of the older cast from the original franchise.
This would be a great commercial franchise move for her at this stage.
Chadwick Boseman has Black Panther
Michael Jordan has Fantastic Four
Anthony Mackie has Falcon (In whichever Marvel movie they continue to cast him in)
Ray Fisher has Cyborg (in Justice League movies) but that one is questionable, as to where or if that will lead to something in the long run. (Just my opinion)
It's not just about art house anymore baby!