Everyone realizes that this movie is going to make X-Men 1-3, Origins, and The Wolverine completely obsolete, right?
If they're going back in time to stop something from happening which had already occurred in the X-Men 1 time line, it will wipe out all those movies or at least drastically change what happens in them. It doesn't matter who dies in the "future" parts of DOFP since it'll all become invalid as soon as the past X-Men stop whatever they need to stop.
This is actually awesome because it means Scott and Jean don't die and that awful Origins movie never happens.
I'm confused.