I would LOVE to have seen the PT made 20 years ago. For all he bitches about the limits of technology keeping him from telling his story, he doesn't realize that nobody really cares about what's going on in the background when you aren't even connected to what's happening in the foreground. Apparently, what technology has afforded him is the ability to create absurd, disposable and forgettable background characters, to allow for the inclusion of DOZENS of sweeping establishing shots, and to suck the humanity out of the main characters in deference to emotionally devoid and pixelated non-reality.
McCallum has a quote in one of the OT docs that so succinctly encapsultaes how little both he and George get it. The quote is, "The essence of the storytelling had to be sacrificed for the limits of technology." How can technology really affect the "essence" of the story? The essence of the story is in the characters, in their journey, in the story that binds them. As the OT showed, and as the dramatic tradition has shown for millenia...the story is in the characters, period. Technology should serve only to aid in the telling of the tale, not become the focus of it.
And as far as GL's "vision"goes, the army of artists from McQuarrie on down gave him his vision. They came up with the concepts and the designs. He just said, "I like this one." I'm sure he offered some input ala "faster more intense", but the physical world of Star Wars was created by, and born from the minds of others. The IDEA was born in Lucas' mind. It was a VERY broad, very expansive idea. That idea was given form and life by everyone else around him. The man deserves his credit. But, to be fair to the hundreds of people who brought it to life, he doesn't deserve as much credit as he gets. Muren, Dykstra, Tippet, Pangrazio, McQuarrie, Kershner, Kasdan, Brackett, Kurtz, and ALL the others are the real magicians who made it all happen. TOGETHER with Lucas, it was their heart, soul, and passion for the story they were telling that made the OT what it has become. It's the humanity that went not only into the characters, but into the process of making the story come to life, that has allowed the trilogy to endure the test of time, as it will for many years to come.