Saw it yesterday. As a straight-up action flick it was okay, albeit it felt quite rushed. When it was over I looked at the clock and couldn't believe it had only been about 1:45 or so. As a comic book movie, the absence of any characterization struck a bad chord with me. I'd rate it as average, overall.
As for the whole "not staying true to the comics" spiel, I thought we'd long moved beyond this with these comic book movies, from the little things Wolverine not having his yellow outfit and spiked mask or Cyclops not having his blue+gold outfit, or even big things like Spiderman being a mutant instead of radioactive (different movie franchise I know, but same point), but apparently five years later we still have people who like to cry "THEY'RE NOT BEING 100% FAITHFUL TO THE COMICSES!!!"