Beast did, it was intentional too he just missed his window to take the antidote so got stuck furry. Warren chose to keep his fire wings cause they were more useful then the feathers. There are ways for Mutants to become more powerful you just don't want it for Cyclops. Remember Cyclops used to be the most powerful one on the team he is not anymore and needs an edge. Even as he lost the power gap to other character he was still the Leader but now he's not even that. Notice how people keep complaining about Scott's treatment. It's cause he's just "there" now and none of the X-men are really just "there" characters. Hell since he's basically just a sniper now, give him a stealth camo suit like the Ninja from MGS
to make him more effective if not a new power (although being able to turn invisible at will would work for him since he's a lot like Violet from the Incredibles personality wise.)