I'm sure I'll be in the minority, but I thought it was pretty cool. Really cool, infact, in a way that I haven't felt since I saw X2 for the first time.
To be honest, I don't get the widespread criticism that the film gets at this point... whether it's the complaint that it doesn't feature the original X-Men lineup, none of whom would fit within the timeline of Xavier and Magneto's age during their falling out aside from Beast, or that it features too many mutants, which has always been kind of the point of the X-Men brand. Teams versus teams, mutants at war with one another.
I like how the film is basically going out of it's way to say "Look, this is the first X-Men mission. This is the trial and error that Xavier has to go through to be a better teacher to the future members. He can't just go off and preach a message of peace without experiencing what Erik's way would bring the world."