One way to combine them creatively is to have a Disney princess end up in the Star Wars universe. For example, Belle could be a diplomat on a planet in the Star Wars galaxy, using her intelligence to negotiate treaties. Another idea is to give a Star Wars character the traits of a Disney princess. Maybe Rey could be seen as a kind of 'princess' figure, with her own 'castle' (the Millennium Falcon) and her loyal 'subjects' (her friends).
A Star Wars and Disney princess fanfiction idea could be that Jasmine is a rebel spy in the Star Wars universe. She uses her skills of stealth and charm, which she developed in Agrabah, to gather intelligence for the Rebel Alliance. Another idea is that Mulan joins the Jedi Order. Her martial arts skills and strong sense of duty would make her a great Jedi.
It can expand the universe by delving into the untold stories of characters. For instance, we can learn more about the daily lives of clone troopers, their thoughts, and feelings. This adds depth to the overall Star Wars lore.
Disney's handling of Star Wars changed the established lore so much that it made it hard for fanfiction writers. For example, the new movies introduced new characters and storylines that sometimes contradicted what was already in the fan - created stories. They also changed the tone in some ways, making it less 'dark and gritty' in parts which was a big part of the appeal in many fanfictions.
The quality of the Disney Star Wars novels varies. Some offer rich storylines and character development, but a few might not live up to the hype. It's a matter of which specific novels you're referring to and what aspects you value in a story.
One great storyline could be about a clone trooper who discovers a hidden Jedi power within himself. He then has to decide whether to keep it a secret or share it with the Jedi. This could lead to a whole new dynamic in the Clone Wars universe.
One interesting Star Wars Disney fanfiction could be a story where Rey teams up with some of the classic Disney characters in a parallel universe. For example, she might meet Mickey Mouse who helps her find a hidden Jedi relic. Another could be a story about Kylo Ren's redemption arc that involves him interacting with Disney - inspired magic. There are also fanfictions that explore the backstories of minor Star Wars characters in the Disney - era of the franchise in a more creative way.
One interesting fanfiction could be about a new Jedi apprentice discovered in a far - flung corner of the galaxy. This apprentice has unique Force abilities that are different from the traditional Jedi skills. Another might be a story where the characters from different Star Wars eras interact, like Darth Vader meeting Rey. There are also fanfictions that explore the backstories of minor characters, such as how a Stormtrooper became disillusioned with the Empire.
Disney's stance on Star Wars fanfiction is complex. They might tolerate it to some extent as a form of fan engagement, but they also have to protect their intellectual property and the integrity of the franchise.