Re: Actors from original trilogy on First Class sequel with Days of Future Past
It would be good if Cumming returned, even though others have argued he needs a proper comeback in another film to explain how he rejoined the X-Men. I agreed at the time.
On the other hand:
1) With mutant survivors banding together as rebels or being herded into camps in the dystopian future, it makes sense Nightcrawler would encounter the X-Men again and perhaps seek sanctuary with them. It would only need a line or two of dialogue.
2) Nightcrawler's portrayal in X2 is highly regarded and often quoted by fans as one of the best debuts, and even best action scenes, in a comic book movie. I think the majority want him back!
3) If the X-Men are to battle Sentinels in new and exciting ways, seeing Nightcrawler teleport their heads or legs off to bring them down would look great on screen.
4) The link with Azazel and Mystique as his parents could be hinted at, if not fully dealt with. The downside being that there would be two demonic teleporters within the film, as well as two Magnetos and two Xaviers.