I agree with Dream's statement regarding the real villain being Tony's drinking problem with I think was handled great in the film. Whiplash and Hammer were surface villains.
I can't disagree more. I thought his drinking problem was very underdeveloped as a subplot. Sure, he's imbibing a little too much at the beginning, but then all of a sudden he's in a drunk slugfest with Rhodey, and then he's cured. It was almost cartoonish in the way it was handled.