According to what told by Ewan McGregor, the Star Wars Obi-Wan series was initially centered around Luke Skywalker and Ben.
The Star Wars: Obi-Wan TV series began as a trilogy of films, centered around Luke Skywalker and Ben , as confirmed by Ewan McGregor . The initial project was to tell Obi-Wan protecting Luke on Tatooine from the Tusken raiders, but Solo’s failure radically changed the project, leading to the cancellation of the films. The arrival of Disney Plus caused Obi-Wan to be recycled as a TV series, which took a lot of the deleted material from the films, but also radically altered the story, now centered around Leia.
Ewan McGregor, the actor who plays Obi-Wan Kenobi on the series, said at the FAN EXPO in Boston that “It was going to be a story about me and Luke. It was always going to be that, and that was one of the genius moments where everyone went, ‘Wait a minute,’ and then changed it.”
McGregor then applauded the ability of Disney and Lucasfilm to not leak anything about the story ahead of time, in order to protect the final experience of the viewers: “I think it’s really cool that Disney and Lucasfilm care so much for the fan experience. They really want you to have a 100% experience the first time you see it” In short, the two houses would protect fans from sneak peeks and rumors so they don’t spoil part of the vision.