The thing they need to do is very simple, and requires all of two panels. [God knows]When, eventually, adult Cyclops comes back, all the characters who've treated him like crap needs to come together, Beast and Wolverine at the fronts and simply say, "Uh... Scott. Ahem... we've treated you horribly for the past few years. Which you didn't deserve. We were in the wrong. And we apologize for that." Cyke says, "Yeah, whatever."
THAT'S IT. It needn't even be mentioned ever again. But that is what Marvel will never ever do.