I hope there's more to it than just X-men vs Brotherhood again, cuz that's the impression this trailer gives, and that'd be pretty boring. There's such a rich history for them to draw stories from that surely they can come up with a better plot than the 'Magneto assembling a band of mutants to wreck havoc against humans' one already explored in the first flick. And in X2, again featuring the brotherhood, their enemies (with the exception of Lady Deathstrike) were human soldiers. :sleeper:
Well, at least they've got elements of the Phoenix saga with Jean back, but it remains to be seen how far they'll take it. If they tell that story, I want to see it told true to form, with plenty of space opera (and the Hellfire Club ffs) not just some condensed version restricted to Earth with Magneto playing the part of Sebastian Shaw.
Gosh, there's so many other stories they can pursue- Sentinels, Apocalypse, Sinister, Days of Future Past, Savage Lands, Brood, the Shadow King. Now I know they're planning to make more than three movies (most of the cast are signed on for at least a fourth) but if they keep the same old brotherhood formula for too long I think audiences are gonna tire of the franchise before they even start exploring some of the more interesting plotlines they could put on screen.