Anyway, it's one thing to make special effects better... It's another thing to change around the story. And on that note, it's one thing to re-insert deleted scenes, but it's another thing to alter the story and even acting in scenes that are already there. Lucas went beyond "special edition" with the Star Wars movies, end entered the territory of "fiddled around with edition". Greedo shooting first altered a fundamental part of Han Solo's character (shoot first, ask questions later), and replacing Shaw with Christensen in Jedi (seeing old Anakin in "pure" form). And beyond that, there's nitpicking things like Boba Fett's voice and whatnot. I can understand the Ian McDirmond emperor scene in Empire, and that was actually not such a bad change since it tightened things up a little bit (even though I think they could have filmed it better).
The point is, GL went beyond making the movies look better, cleaner, more consistant, whatever. He wanted to change the actual actors because he thought they needed tweaking, and they clearly did not.
