I agree that Henderson looks ten times better in the middle, but I'm not too sure he compliments Gerrard in that position. I think we get the best out of Stevie when he plays alongside Lucas (when fit) or Spearing, he looks his best when he's got a holding player alongside him.
In that case, Henderson would have to be preferred to Andy Carroll if he wanted to play there. Suarez up top with Gerrard behind, and Henderson with Spearing/Lucas. Of course, I'm not a fan of rotation, and Carroll and Henderson both have great potential -- I'm a fan of both players. It's a pickle.
Bit worrying that Charlie Adam doesn't figure in my thoughts though.