Alot of defenders of Lucas's vision crap forget what he says on the '97 Laserdisk SE Interview: He was only going to release Star Wars: Episode IV to the theaters, and only touch up effects on that movie only, and the main inspiration was he always envisioned Mos Eisley much bigger. That is a key sentence, cause if he only wanted to touch up the original, that means he never had this huge vision of updating the OT, so all he is doing on each subsequent release is trying to tie the sagas through gimmicks like Hayden as a force ghost cause he couldn't write the PT to tie with the OT.

Lucas goes on to say after they touched up the Original SW, they had such a good time, they decided to touch up ESB & ROTJ. Translation: $$$$$$$$$$$$$$$$$$$$$$. Lets do the math, if I release 3 movies to the theaters instead of one, I can make triple the money, then video release.......

This whole vision crap and changing the OT is a bunch of crap, I honestly believe he is genuine about touching up the Original SW, cause I do believe there are things he wanted to do in '77 that he couldn't. But if you look at ESB & ROTJ, he didn't do that much, and the stuff he did were awful scene changes: Vader going to his shuttle on Cloud City, a new Wampa, Jedi Rocks, Hayden as a Force Ghost. He had to change something in each movie to sell this new product, or why would everyone go? The only drastic effects changes happen in the Original SW, everything else after that was just meddling and tinkering, and the 2004 release has two major changes and both try to tie the saga together.