Originally Posted by spideyboy_1111
Not every X-men needs to play a major part. This is a PRIME oppurtunity to cameo many X-men, a time where they really don't even need much development (the future ones that is)
The problem with that way of thinking is that you risk a repeat of The Last Stand, in which there were minor roles from Multiple Man, Juggernaut, Psylocke, Callisto, Arclight, various members of the Morlocks, and even Angel wasn't much more than a shockingly wasted cameo role.
If we look at Avengers, there weren't loads of cameo roles with Ant-Man, Vision, etc, popping up in the background. And if we look at the Dark Knight Rises, none of those escaped prisoners appeared to be Riddler, Penguin, etc.
The two X-Men movies with the most background characters are the ones that are least liked: X-Men: The Last Stand and X-Men Origins: Wolverine. While there may have been bigger issues than cameo roles, the fans seem to feel characters were stuffed into the film to get people to see the movie rather than because they really fitted the story.
Too many cameos in DoFP will ruin it.