i thought some of the effects were a bit shoddy as well. but then at the time i wondered if it was important that they no longer looked like grapes but cgi balls, and i dont think it did.

perhaps when he has more money he can go bck and re edit it in better CG.
but perhaps he doen't want to. for whatever reasons.
it is done now and i guess one cannot keep going back to a piece and re working every flaw, or you never get anything else done ;]

so perhaps it is enough to say great art, bad film.