* Early 70s, he invisions this space sci-fi movie that has the same feel as the old matine serials such as Flash Gordon. He starts to write some stuff and do some concept art. General Luke Starkiller, midgets being the heroes, Solo being a green alien, the story of Mace Windu a Jedi Bendu of Utapau, and stuff like that.
* Mid 70s, he has everything pretty much planned for a SINGLE MOVIE. Obi-Wan dosen't die, there are these force crystals, the art concept guy came up with Vader being in a suit, "may the force of others be with you", stormtroopers with lightsabers, and all that early draft insanity.
* He starts to cast and move the film to pre-production, and he finishes a final draft at the same time. By the time he began casting and creating ILM he still had an early draft. Still no sign of the so called "saga".
* Finishes shooting, movie is released and is a hit. GL is smart enough to know HOW to milk this cash cow, and he does it brilliantly. He comes up with the concept of Star Wars being episode 1, later episode 4 (yes he did considered having Star Wars as episode 1), and writes down small drafts of the following movies. The Emperor is not to appear until movie nine, there is NO death star 2, and so on.
* Comes up with the concept that Vader might be Luke's father (not even GL knows for sure either). Finishes writing the story for ESB, calls Irvin Kershner who takes on the project and make it work.
* Movie is also a hit, he WAITS for Harrison Ford answer so he knows if Solo should be killed off or not. Harrison ford agrees to be in the next one, he writes down a vague story CLOSING the trilogy, because he was probably very bored by now. He gives up doing the later trilogies and try tries to come up with anything to close the movie. Comes up with the Leia being Luke's sister thing.
* ROTJ is released, he focus on other projects.
* Early 90s, he is bored again, and decides to mess up with Star Wars. Lucasfilm and FOX want to re-relase the movies in 1997, but they need something extra to justify someone going into the theater and watching a movie everyone has seen thousands of times: they come up with it being a "director's cut" version - it has been done before with Close Encounters and Fantasia. They change the movie, add a few scenes and add CGI to justify people going into the theaters, NOT because GL had this "original vision", he never had such a vision.
* GL gets trapped in lies and more lies, so he just keeps lying to cover it. He says that the movies were changed in order to make it closer to his original view. Starts pre-production of Phantom Menace BEFORE he had a script written - casts Natalie Portman as OBI-WAN'S WIFE (remember that?! I do, back in 1997). Writes something in a weekend, and moves on with production.
* Losing his touch and his creativity, trapped in media lies and confused by the plot holes, directing bleak, week and slow movies, he goes on and destroy the chance to do good prequels by writing and directing them himself, and adding as much bluescreeen as possible.