My wife and I really liked fantastic 4, I guess because it was more about the characters than the action. I can see why many didn't like it though, and personally I could have stood to see more from Dr. Doom and was dissapointed that he wasn't a despot.
I really don't see what the big deal about having a warp drive would have been. I mean, come on people, you could introduce one of the alien cultures from x-men, or maybe switch around venom's creation story a bit, or something!
Besides that, everyone knows that the only super thing cosmic radiation gives you is super painful cataracts. Just ask buzz aldrin.