Wyck Godfrey, the producer of all the films in the "Twilight" saga defines the attributes of the director they are trying to find for directing Breaking dawn. he says,"we're just focused on the treatment and getting that right. At that point, we're going to see who's available and who's appropriate. It's such a complicated book because you have the emotions and the intensity of the love story -- so you need somebody who's just a wonderful director of actors -- and yet it's really complicated from an action and visual effects standpoint. They've got to have both tools in their kit."
A visual effects background might be particularly helpful when it comes to dealing with the character of Renesmee.
"I keep having visions of '[The Curious Case of] Benjamin Button' in my head," Godfrey said, referring to David Fincher's Oscar-nominated 2008 fantasy about a man who becomes physically younger as he ages. "It's certainly going to be visual effects in some capacity along with an actor. I wouldn't be surprised if it ends up being a full CG creation, but it also may be a human shot on a soundstage that then is used to shrink down. I don't know. We need a director. When we get a director, that director will need to come with a point of view of how they want to tackle it." more @source
Let's learn more about David Fincher and the making of TCCOBB, see if it clicks:)