I'm not a fan of the Avengers but I enjoyed the movie. It had a decent amount of character development, decent pace, they didn't allow it to turn into a special-effect brain-scramble like Transformers, and no one character was allowed to dominate (unlike the X-men movies). My issue with the movie is my issue with the Avengers, namely that the gulf between the super-powered characters and 'non-powered' characters is just ludicrously large. I was also a bit disappointed that Widow didn't seem to use any of her iconic equipment like her grapple line, wall-crawling gloves, or Widow's Bite but overall, I though she had an enjoyable development arc. I love Loki and the Hulk's story arc was well done too. Maria Hill seemed like a bit too much of an underling but maybe they though having two bad ass agents might lead to too much friction on screen. I think I prefer Cap's WWII outfit but his costume wasn't as hideous as it could have been.