So you weren't too happy about the first film either? Don't get me wrong, I didn't think it was really awful crap or something (I'd rate it 7/10) but after the general positive reviews I was quite baffled about all the buzz. What really bothered me was the waste of so much talent in so many one-dimensional roles. Portman's role reminded me slightly of female depiction out of the early 60's, Idris Elba was basically a talking rock and the great Tadanobu Asano ended up as a random asian guy.
Those are basically my thoughts. I was quite disappointed that it all basically just built up to a fairly uninteresting fight with what just amounts to a fancy robot. And all it offered in addition was a bunch of fairly standard humor and a supporting cast that I truly couldn't care less about (Portman and Dennings in particular). It's not a bad movie by any stretch, but it and Iron Man 2 sit shoulder-to-shoulder as the sagging middle of Phase 1 in my mind.