^ (edit: You have to agree, though, people were excited to see Rogue's return and were hoping she'd take down a sentinel or two. They should have just never announced Paquin, like they did with Marsden and Jansen.)
I can barely sit through 1 hour of film without feeling like it's too much time spent sitting down, eyes fixed on the screen. Humans actualy have 15 minute attention spans, after which they need some sort of break or relief, but I'm sure filmmakers know that (sorry, so random)
Anyway, I could see Nightcrawler as Mystique & Magneto's son. Azazel would serve almost no purpose here, plus they could set up a family tree/feud and a possible rivalry between "brothers" Nightcrawler and Quicksilver. Some fans already predicted that fight. Cherry on top: Have him fall in love with Wanda, like in Wolverin & the X-Men. >:3 so cliché, i know
... or maybe the story needed another teleporter? it is a very useful ability after all.