Yeah Mr. Sinister with Apocalypse as the real threat to be revealed later. I want to see Cable and his story explained. This way we get Sinister as the villain but Apocalypse is the real threat. Or we can get Stryfe and X-force for a real twist. Cable vs Stryfe.
I just want to see something more with Cable, and different timelines.
We could also do the Age of Apocalypse and use Nate Grey. This way we get Sinister, Apocalypse and a super powerful version of Cable.