One idea could be exploring the backstories of the Ewoks in more detail. Maybe there was a great Ewok hero before the events of Return of the Jedi that inspired their fight against the Empire. Another could be a story about Luke Skywalker's further training with the Force immediately after the movie. He could discover new Force abilities.
One idea could be exploring the rebuilding of the galaxy. Maybe showing how different planets come together to form a new, more inclusive galactic government. Another could be delving into the lives of the next generation of Jedi, like Luke Skywalker training a new group of students with diverse backgrounds.
Maybe in the fanfic, Leia could discover she has an even stronger connection to the Force than Luke. She could then take on a more central role in the battle against the Empire, leading the Rebel Alliance in a different way than Luke would have. For example, she might use her diplomatic skills along with her newfound Force powers to sway key Imperial officers to defect.
Another idea is to rewrite a key scene from a different character's perspective. Like the throne room scene from Kylo Ren's point of view. We could get more insights into his internal struggle and his true intentions during that encounter.
One idea could be an OC Jedi who discovers a long - lost Jedi technique that gives them unique powers. This could lead to a series of adventures as they try to master it while also facing off against Sith or other enemies who want to steal the knowledge for themselves.
A great fanfic idea could be to focus on the relationship between Cal Kestis and his friends in a more in - depth way. For example, show how they deal with the pressure of being on the run from the Empire. You could also write about a new enemy that they encounter, one that is not directly related to the Sith or the Empire but still poses a great threat to them.
One interesting Star Wars fanfiction could be 'The Jedi Apprentice's Adventure'. It follows a young Jedi apprentice on a mission to discover an ancient Jedi artifact. Another is 'Jedi in Exile', which explores what happens to a Jedi who is forced into hiding. And 'Jedi Council Secrets' reveals some behind - the - scenes happenings in the Jedi Council that are not shown in the original movies.
A cool plot idea could be creating a story around the connection between the Force-sensitive characters in a different way. Maybe there's a hidden group of Force - users who are trying to manipulate the events in The Last Jedi for their own gain. This could involve characters like Rey, Kylo Ren, and Luke Skywalker being unknowingly pawns in a larger game. It would add a new layer of mystery and intrigue to the existing story.
A plot could involve Merrin forming an unexpected alliance with a group of smugglers. Together, they navigate through the dangerous underworld of the Star Wars universe while Merrin also tries to hide her true identity as a Nightsister. This would lead to many tense and humorous situations as she tries to fit in with this new group while also dealing with her own personal growth in the Force.
I think the Emperor could be an interesting character to focus on. In 'Return of the Jedi Redux' fanfiction, we could explore his backstory more. What made him turn to the dark side in the first place? And are there any weaknesses in his seemingly all - powerful grip on the Empire? Also, the Ewoks could be given more depth. Instead of just being the cute but fierce forest dwellers, they could have a more complex culture and history that plays into the story.
One interesting Jedi story is that of Obi - Wan Kenobi. He trained Anakin Skywalker, who was believed to be the Chosen One. His story is filled with battles against the Sith, like his duel with Darth Maul. Obi - Wan also had to face the fall of his apprentice, which was a great tragedy in his life.