Idea for a Season 5
I know its not likely that they will continue this series since its already been replaced by another one, but I just thought it would be interesting to have seen how the fifth season of the show would have been, given the unique way the show had reinterpreted the X-men mythos in the first four seasons.
My idea is that if there is a Season 5, it should be set about 4-5 years after the end of Season 4. The X-men should all be in their early 20's and maybe in the outfits they wore in the 'future glimpses' in the finale. I think the show should have built up on the theme of anti-mutant hysteria, with organisations like the Friends of Humanity coming up while the Sentinel Program continues to evolve. Jean's growing power and her transformation into Dark Pheonix could also be explored. A lot of other classic X-men storylines could be retold, like Days of Future Past, the Pheonix Saga, the Proteus Saga among others. And perhaps Wolverine's past could be delved into more deeply, along with his relationship with X23.