Originally Posted by Dark Raven
That's completely the opposite of X-Men here, where they are trying to throw out whatever doesn't work (Last Stand, Origins) as a result of their own missteps, and eradicate it from existence through this plot device.
Thats not really clear yet though, X3 is being used in The Wolverine. And we have no idea what continuity is being kept from X 1 and 2 in DOFP. They could very well just start a new timeline for the FC crew so they dont rely on the originals continuity, making FC essentially a reboot which would be a similar situation to Star Trek. Im sure Fox is thinking about the future of these films, how long the original actors will/can return may not be that long after this film is released.