Originally Posted by X-Maniac
I think there will be more than one time traveller. They wouldn't bring back all these cast members and keep them in brief future scenes.
I wouldn't necessarily assume that those future scenes will be brief. If they're bringing in the Sentinels then there is likely to be at least one full-on fight scene between them and the mutants. Unless both Sentinels and the mutants time-travel
And other than maybe old Professor X and Magneto meeting their young versions, I can't really see why the meeting between the old and new cast members would be all that compelling. I'd just rather the movie spend time on the relationships that actually have history and weight.