Well he's going to have a Frankenstein's monster by the time he gets done making all the changes he keeps making. It would be much better to just re-film the whole trilogy all over again. New actors, new effects. It's been done before.
Yeah, but if he's THAT unhappy with the movies, why doesn't he just remake the whole trilogy? Many movies have recently gotten the re-make treatment: Texas Chainsaw Massacre, Dawn Of the Dead, The Ring...