Re: 20thCenturyFox's Future Spin-offs and Solo Movies
Personally, Id preffer a GAMBIT solo movie the most.
To me, he is just the other hot and popular mutant that most people know and like, so it could be great to know his origing, develop him a bit, and maybe add a few small cameos from the main team, like Rogue or so.
And of course... this way he could join the team on the team movie after his spin-off, and audience will be more familiar with him yet and no need to tell us who he is and where does he comes from.
Next Big X-Men Crossover
* 2017- X-Men: Age of Apocalypse
Edit: Forget about 2017:
Official announcement -> X-MEN: APOCALYPSE - MAY 27, 2016!!!!