i like paquin fine. you gotta realize no ones really the same in the movies. you just cant translate comics to other mediums the same way. take iceman for example. he is supposed to be a founding member, but in the movie he's a student being taught by cyclops and jean. still, i obviously loved the movies, you just gotta grant the movies a little leniency.
I think rogue can be both in x-3,we already have the vunerable side and she did show more of a flitry-cocky side in x-2,and it would be easy for the writers to expand on that.As for her getting the miss marvel powers,how can they do that,the only real opititons are to either have her evolving because of mags machine like jean or somehow her absorbing phoenix and retaining certain powers permantly.
It could very easily be done, though they would need to license Ms. Marvel...
It would be very easy to make it an accident...
It would be dumb if it was associated with Jean or the Phoenix, the phoenix hasn't any capability like that...
and mags machine only changed her hair... triggering a mutation so long after would be a terrible plot hole...