I know nothing about the comics outside of a few things I heard from my friends, and some stuff from Linkara. Personally, I prefer that the actual hero is set up, and want to follow the hero through the story. It would be nice if the villains were more developed, but the hero needs to be developed first before I care about the rest. I should want the hero to succeed, and that gives enough reason for wanting the villain to fail. I feel that some of the villains weren't that bad, red skull, winter soldier, the one from thor 2 wasn't to bad, and Loki. If they could do some tweaking, they could make things better than they are, but I don't see the villains as problematic, at least at the moment.