Re: Who dies?
You know, I've been wondering about the Hulk. In the comics he's a founding member, but he split after dealing with Loki, and has never been important to the Avengers until recently. Personally I wouldn't mind something happening and Hulk/Banner walking away. It'd be a good homage to the comics and open up another potential roster spot. However after how well received his appearance was in the Avengers, I think its pretty safe to say that the jade giant is stickin around.
As far as who I think is gonna bite it, my money is on Fury and his fake death/LMD trick. It sets up Hill to become director and would create all sorts of tension in future movies. Plus it's classic Fury.