New Moon Rises without Twilight Director

Like that headline? It's kind of newspaper-ish, right? Or is it just Variety-esque? Either way, I found this account of why Twilight director Catherine Hardwicke was not asked back to direct the sequel, New Moon. Among the more interesting tidbits was the challenge of having a series carried by a perpetually teenage cast, which I hadn't really considered before:

Unlike with "Harry Potter," whose characters aged with each book, the characters in the "Twilight" series remain young forever, so if the studio is going to rely on its newly minted stars, Kristen Stewart and Rob Pattinson, to carry the entire series, it has to move full speed ahead. Summit has options on its lead actors, but since they are now in demand for other films, if Summit doesn't press ahead quickly, it could lose them for months on end to other productions.