9. Charles Xavier's Hair
This may seem like a silly point to pick up on, but isn't it about time that Professor X loses his hair? What makes Charles Xavier so recognisable is the fact he's bald, and seeing him rock that look in X-Men: Apocalypse would be very fitting. After all, it appears as if this movie will be the one which delivers the most classic take on the X-Men to date; viewers are going to meet younger versions of fan-favourite characters and see them battle a truly iconic villain. Some comic books have offered various reasons for the loss of Charles' hair. Singer could go that route - a massive wave of psychic power causing it to all fall out for example - but why not just have a bald Professor X when the movie picks up with him in the 1980s set X-Men: Apocalypse? Ultimately, the explanation isn't really that important. What is important (for comic book fans at least) is that they get to see James McAvoy's Xavier take another step closer to becoming the Patrick Stewart version from the original trilogy. Many hoped that X-Men: Days Of Future Past would be the movie this was going to happen in, so now it's up to X-Men: Apocalypse to make it up to disappointed fans.