Re: New characters you want to see in the First Class sequel?
Agree about the danger with cameos. It would be better to just use a B/C-list mutant as a secondary role, instead of 3 or 4 cameos by well known characters.
a realistic approach of the apocaliptic future would be to have the alive x-men working with at least one new mutant, specially if his/her power is usefull in battle, or in another case, to achieve the time travel.
an unrealistic approach would be to have just actors from the original trilogy working alone to change that future.
Even the comic arc had two new characters like Rachel and Franklin, and two tv series had new characters helping Logan too, so Singer should show someway that the x-men from previous trilogy have spent some time with other mutants all these years or at leat the latest months before the very first scene of the movie.
Im sure most of us dont prettend Singer to give the spotlight to the new character, just to show that the x-men HAVE some help from another mutant, at least on one scene. Thats all, marvelrobb
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!