X-Men movie (Marvel Studios)

[IMJ]

One of the biggest challenges will be Magneto as someone who experienced the Holocaust. They'd basically have to weave in some kind of "anti aging element" to the story and that would just deeply convolute things.

The other big challenge is choosing what age to make the X-Men in general. Kids won't cut it and honestly neither do teens. But that real deep split you get in the mid-20's as people start to really come into their own is probably the right landing zone there.