Fears about The Incredible Hulk

I think Abom and the Leader should team up in either the sequel or a sequel to the sequel (If the second one does well), with Leader as the brains and Abom as the muscle/executioner.

That's probably going to happen in the sequel and not the sequel's sequel. But more than likely, the Abomination will return in nearly all of the movies. I'd actually like to see his appearance change to something a bit similar to the comics. What could happen is Ross could experiment on him or have people experiment on him which accidentally mutates him even further. I like the redesign a lot (a little more so than the comic design) but it would be cool to see his face become a bit more like the comic version in one of the sequels.