Re: The beginning sequence of the DOFP
I think a fresh credits sequence would be best. The existing ones belong to those films from many years ago, and although they are elegant and stylish and indicate a cool sci-fi take on the comics, things have moved on.
It already felt a bit strange to me when the X1 Auschwitz sequence was re-created for First Class. So it's probably time now for something different.
Maybe some graphics that indicate time travel and alternate realities, to convey the underlying concepts of the story.
We don't need to see an indication of DNA and mutation now that the X-Men are established.
But Angamb is right. The film as a whole is far more crucial than a few seconds of swirling CGI at the start.