Okay, look, something that needs to be cleared up: Tim Burton is not directing, he is producing. That is true. What is not true is the assumption that this means he has no say over what happens. Because he's the one giving them the money, he gets to say "Make this change or I won't give you my money any more." That's not to say that it will be a Tim Burton movie, just that it will have a Tim Burton influence in terms of creative decisions. In terms of actual execution and the like, that is left up to the director.