Generation X, Generation X, Generation X...
So... this won't be on for YEARS (if at all; not all concepts make it to pilots and not all pilots get selected to be aired).
It's funny, though: If Gotham stays on the air that long, Fox will be airing both a Marvel Comics show AND a DC Comics show!
If they tie it into the movie franchise, they could have it be about the school we saw at the end of "Days of Future Past," with Storm returning as headmistress (we all know Halle Berry's willing to do television), and with Generation X/New Mutants/New X-Men characters part of the incoming freshman class. And that includes Chamber and Penance, this time around. Jubilee could finally be seen at the school, having been in so many deleted scenes already, lol.
Kitty, Bobby, and Rogue could show up, too, if the actors are willing to reprise the roles for television. In fact, if the movie universe is "rebooting" to the point where the original actors for Storm, Jean, Cyclops, etc. aren't needed, maybe this could be a new home for them... The absence of Wolverine is easily explainable -- that guy is always taking off. (Of course, Hugh Jackman has done television, too, so if they wanted to... Professor Logan, anyone?? ;D).
I know Xavier was returned from the dead, but he doesn't have to necessarily show up in the daily operations of the school. Maybe save Patrick Stewart for things like the pilot episode and the season finale. (I'm getting sooo ahead of myself, lol).
Either one would be fine by me, too!
FOX has gotten a lot better at handling X-Men rights since then, i.e. all the X-Men movies that've been released so far. (Except for maybe Wolverine: Origins, haha).