[Brian Braddock]

Would love to the see the Leader, Doc Samson and a Crusher Creel Absorbing Man in a new Hulk movie. Done right.

Other than that, there's the likes of Qnax, the Rhino, The Missing Link, Xemnu, Wendigo and Sasquatch but as they're all pretty much the same kind of physical threat to Hulk [although possibly the parallel between Sasquatch's duality and Hulk's might be interesting] if they were to go that route I'd just as soon as see Blonsky again, tbh.