Re: It would be pretty great if...
I love the idea of the homeage to the device from X1. And maybe the future incarnation of Rogue (time traveler) can be closer to the comic representation as far as character, costume, and abilities (including near invulernability, strength and flight).
Maybe have the movie start with Rogue, Magneto, Storm, Forge/Beast, Wolverine completing final testing of the device and have the location attacked by sentinels. The original intent was for Magneto to use his powers to travel back in the past but is lethally wounded during the sentinel confrontation and the only remaining option is for Rogue to absorb his powers and return to the past.