I have to agree here. The intro was good, especially the beginning.
Has someone said X-Men yet? Granted, it is a sweet intro, but two things about it bug me:
First, Magneto is portrayed as the X-Men's archenemy and Professor Xavier's evil opposite number... even though they only fought him on and off throughout the first season, he was an outright good guy in the running b-plot of the second, and from what I've heard, he's generally a pretty decent person from there until the last episode. That part could've done with some shaking up.
Second, well, look at the codenames, flashed up to a great deal of fanfare, and right in the middle of all these cool-sounding superhero names: "JEAN GREY"! It's bad enough in general, but if you're going to build your introduction around awesome codenames, well... there has to be a better way than that.