I was able to enjoy it as a stand-alone movie. I know a lot of people are saying "What about the other Avengers? What about Shield?" I thought about it, but it didn't bother me that much. I wanted to see how Tony was going to use his wits to handle this seemingly unbeatable bad guy.
I think this will be a problem for all future Marvel movies. The Avengers set the bar sooo high, that expectations are crazy.
How about NO version of Toy Story 3? http://www.animationnation.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=1;t=011040;p= Leave a good thing alone I say. Good for Lasseter. I'm glad they put him in charge of Imagineering.