Re: Ideas on how to achieve time travel
I don't think its a good idea for Mystique to be the time traveler since she's still so innocent (the First Class Mystique) and inexperienced. Plus it would be odd that her character would get so much purpose and presence in the movie. In the original trilogy, she was only a supporting/secondary character. The ideal time traveler/s are Professor X, Magneto and Wolverine. If those 3 characters (especially Magneto) have to bring someone to accompany their journey, then I wouldn't mind if Mystique is one of the time-travelers but her to be the one and only time traveler would be an odd decision.
X-MEN RI5E' MUTANT OF THE MONTH | PROFESSOR X | PORTRAYED BY PATRICK STEWART
"Every few hundred millenia evolution leaps forward." - X1
"Sharing the world has never been humanity's defining attribute." - X2
"Will you control that power or let it control you?" - X3
"Is the future truly set?" - X4