The comic book world loves to call mulligans on characters that theyve killed off. They want to make sure that well never be without Superman. I see the practical need for it, but when its done too often or too soon it becomes a major problem. Death has no emotional impact, we lose any sense of real danger or loss, and the audience begins to distrust the foundation a narrative is built on. It has no meaning when you kill (or depower) a character if youre just going to bring them back in a major role for the next movie. Despite dying twice, Jean continued to be featured in The Wolverine. Xavier didnt make it through one movie vaporized. Magneto was cured of his powers from the climax too just before the credits. If what is supposed to be a permanent change is so temporary, you might as well just be knocking X-Men figurines together like a child.