Originally Posted by Gary Griffith
1) Prof X (Stewart) coming back (yeah I know there's a half-asses explanation in X-3 but I think it has to be explored)
3) How Mystique turns from nice girl to killer assassin
For me those two are the most important and I feel they have the opportunity to explain them in this movie. I don't really see them explaining/fixing #4 and #5.
Plus another reason why I don't want a First Class movie that will feature the younger version of Cyclops, Jean Grey and Storm. Is it could just create more continuity errors and if they connect it to the events of X3/Origins, it might end still look confusing.