Producer Gary Kurtz said differently in a interview in 1999. According to him, Star Wars was meant to be a standalone film. It was only after the film's wild success that he and Lucas considered sequels. So, Star Wars became the fourth story of a nine-part series and rough outlines for each episode were written. After the "fifth" episode, The Empire Strikes Back, Lucas made Raiders of the Lost Ark with Steven Spielberg. The success of Raiders convinced Lucas to emphasize action in the "sixth" SW episode, Return of the Jedi.
According to Kurtz, the Emperor was not originally going to appear until episode 9. Luke and Leia weren't brother and sister. There was no Death Star II. The search for Han Solo was the main plot of the film, during which Luke would have continued his Jedi training. Solo was to die in the final battle. Luke was to go off to complete his training and Leia was to resume her position as Queen of her people, separating the major characters in a downer ending like that of Empire.
Kurtz parted company with Lucas after objecting to the changes Lucas made to their original plan. He hasn't worked with Lucas since.
So, in summary these were the original plans for the nine SW films, according to Kurtz:
EPISODE 1: the origins of the Jedi Knights and how they are initiated and trained
EPISODE 2: Introduction and development of Obi-Wan Kenobi
EPISODE 3: Introduction and life of Vader
EPISODE 4: There were seven different drafts of the film. At one point, Luke was a female, Han was Luke's brother, Luke's father was the one in prison (interesting point for some debates) and the film featured 40 Wookies.
EPISODE 5: Once written, the screenplay of Empire is almost exactly what is seen on screen.
EPISODE 6: Leia was to be elected "Queen of her people" leaving her isolated. Han was to die. Luke confronted Vader and went on with his life alone. Leia was not to be Luke's sister.
EPISODE 7: Third trilogy was to focus on Luke's life as a Jedi, with very few details planned out.
EPISODE 8: Luke's sister (not Leia) appears from another part of the galaxy.
EPISODE 9: First appearance of the Emperor.
Well, what do you all think of Mr. Kurtz's revelations? Believable? Or just sour grapes from a bitter man? I think this does help explain why we see inconsistencies in the films' plotlines. If Kurtz is correct, then Lucas is basically making it up as he goes along. This would explain why Obi-Wan seems to lie a lot, as noted by my astute Watch colleagues.
