User blog comment:ADour/The MARVEL UNIVERSE is ENDING!/@comment-4991637-20150121035924/@comment-26118551-20150121054719

"Would Marvel not be allowed to do What Ifs, dimension-hopping, or alternate future stories going forward?" - RaijinK

If they do it, they could do alternate future stories without creating an alternate future using a different time-travel concept, like: something awful happens in the future, someone goes back in time to prevent it from happening, s/he succeeds and the future is rewritten as if nothing had happened, only the time-traveler will remeber what happened and the future he came from never was. And they could change the future as often as they wanted without creating a new reality.