One can question the title X2: X-Men United in relation to the film. When I think of X2, I think of the Brotherhood and X-Men (and Nightcrawler) uniting against a common human threat, not the X-Men uniting as though they weren't united in the first place. As awful as it would have been, and I'm not recommending this, it would have made more sense for X2 to be called X2: Mutants United than X2: X-Men United. The X-Men only truly unite at the end of the film and, if that's all it takes for the title to apply, Xavier could just as easily begin forming his first class of students toward the end of First Class, after he and Magneto lose a few younger mutants (not necessarily what Xavier considers his students). If something like that were to occur, Xavier could take in the likes of Beast and Banshee and recruit Cyclops, Jean, and Storm sometime later and he would still have few enough students that he could consider Cyclops, Jean, and Storm some of his first relative to the numerous ones he takes in over the 15-20 years after that. Of course, I could be completely wrong. The more I think about it, the more I question how much of this movie only takes place in the 1960s. That is, if it does, what in the world does Xavier do for the rest of the decade, not to mention the 1970s and 1980s? Or is Singer simply being inconsistent with what hes already established??? I suppose Xavier could also be misleading Wolverine in X-Men, as The Last Stand demonstrates Xavier isn't afraid to keep secrets, especially dark ones. I guess we'll see, but I'm curious to know sooner rather than later.