I understand, but I still almost wish there was a singular director category. I don't know that in the case of something like Yang and Yi Yi simply to recognise the film.
That said, it may be one of a few exceptions. I guess I feel it's a little like saying Harper Lee wasn't a great writer because she only wrote one book (To Kill a Mockingbird). Although again, that doesn't entirely fit, but I suppose it's the way I feel. And if I'm the only one who feels this way, I won't cause any fuss, but don't be surprised if you get a vote for Yang as best director from me.