I thought Episode I and II were always going to be filler. And that the only film Lucas really had the backstory sketched out at all was Episode III. That film was supposed to be the real meat of the story. But almost most of the film is wasted. The most important part was making Anakin's turn believable.
The Vader hunting down the Jedi arc, and Rebellion arc should have been in this film but was not. Only does the very end of the movie set up the original trilogy. Something like the last 5 minutes or something. You never really do see badass machine man Vader stalking Jedi and getting into heated lightsaber duels with them.
Only the dark lord novel and its eventual sequels if written set up things to come. Only the EU sets up the rebellion era and a very poor job at that in the force unleashed. I actually liked Lucas deleted scenes version in sith better. Padme sets up the rebellion and not palpatine to ensnare the senators. That was so retarded it was beyond any stupid Lucasian plot i have ever encountered. Worse than the virgin birth of Anakin. Worse than midiclorians, and worse than Jar Jar.
We all know he is just making things up as he goes along. Things could have been more artfully done without drawing attention to the patchwork stitched together plot threads. If you see the author's hand at work or manipulating the plot to shoehorn things together you are taken out of the story. You lose suspension of disbelief. The Lucas of yesteryear was a magician who weaved tales magically without the audience being drawn out of the movie while watching it or being drawn in attention to the CGI and missing the story.
I would'nt say the story or plot is bad in the prequels or the ideas. But the way of conveying things could have been more clear. The prequels confuse the hell out of people looking for logic and consistency, when things are done just because it was in the script or was necessary to the plot. The originals had very simple themes and ideas and did not try to be complex in a socio political way like the prequels in a pretentious way while drawing people ears to the music and the cgi and saying this is epic feel.
Watching the original films and taken notes should have been done by Lucas or one of his staff prior to the start of making these films. Nevertheless doing things in reverse is never easy. The fact that no story exists for the prequels prior to nov 1, 1994 without any hard evidance makes that clear. He may have had it in his head or hashed out a general outline verbally with Gary Kurtz. But no outline for films 1-9 appear to be in existance. And very much appear to be a fabricated myth that Lucas had everything figured out from day one.
The Empire Strikes Back and Return of the Jedi changed the original concept of what the prequels were by
A. Making Vader Luke's Father. The Jedi trio of Lukes father, Ben Kenobi and Vader were replaced by only Ben, and Skywalker and vader were merged.
B. Making Leia the Sister.
C. Having Luke confront the emperor earlier than he was supposed to.
To me it was more seeing the authors hand at work making the story up as he went than Palpatine being this puppetmaster controlling all these seperate threads.
I mean it totally reminds me of the Wizard of OZ. "don't pay attention to the man behind the curtain". Its only Lucas, rofl.