Re: Which X-Men Should die or be dead in DOFP?
A good plot point would be to show the real Phoenix with the fire bird, and at the end Xavier eraze the memory of all the x-men, as the Phoenix stuff didnt happen, and that would explain why none of the original trilogy knew about the Phoenix or Jean blocks.
Not sure if Bryan would do that with Charles, but that would give him freedom to adapt his version of the Phoenix arc, just in a smaller way.
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!