Really enjoyed it. Jackman, Stewart and Keene were IMO the strong points of the movie, especially Keene.
The generic villains and the lack of development on the other "kids" I blame on the time restrictions for cinema movies. Clearly they could have put way more background to Pierce and Dr. Rice if there was time. Hopefully there'll be a director's cut/extended version.
For me it was probably the best comic book movie I've seen, Nolan's Batman included.