Well, one unique aspect is the different relationships. A female Luke might have different dynamics with Han Solo. Maybe there would be more of a romantic tension from the start. Also, with Leia, it could be a sister - like bond but with a different flavor, like they might support each other in different ways.
One great Luke Skywalker fanfic to start with could be 'The Life and Times of Luke Skywalker' as it delves deep into his character, exploring his journey not just as a Jedi but also as a person. It gives a very in - depth look at his relationships, his growth, and his struggles, which is really engaging for any Star Wars fan.
There's 'The Female Luke Skywalker Chronicles'. This fanfic focuses on a female Luke having to deal with the same challenges but with a different perspective. For example, the way she is perceived in the male - dominated Rebel Alliance is a big part of the story. It's really cool how it shows her strength in a new light.
One popular theme is Luke's further training as a Jedi. Many fanfics explore what he could have learned beyond what was shown in the movies. Another theme is his relationships, like his friendship with Han Solo and Leia in more depth or potential romantic relationships. And there are also fanfics about Luke's role in rebuilding the Jedi Order, showing his leadership and the challenges he faces in that regard.
I really like the fanfic 'Luke Skywalker: The Hidden Years'. This one focuses on the time between the movies that we don't really get to see much of. It shows Luke's personal growth and his attempts to understand the Force better on his own. He has some amazing adventures and meets some unique characters that add a lot to the story.
Luke's friends from the light side could also be important. Characters like Leia, Han Solo, or Chewbacca. Their reactions to Luke's turn and their attempts to bring him back would be significant aspects of the story. There could also be new characters created specifically for this novel, perhaps some Jedi who were thought to be dead but are actually in hiding and oppose Luke's new path.
One idea could be Luke Skywalker somehow gets transported to the My Little Pony universe. Maybe he has to use his Jedi skills to protect the ponies from a new threat that has emerged, like a dark magic that is similar to the dark side of the Force. He could teach the ponies about self - defense and the importance of inner strength.
If they trained together, Luke would learn a great deal from Ahsoka. She has a different style of combat and a unique understanding of the Force. Luke might pick up new lightsaber techniques that could enhance his own fighting ability.
One possible adventure in a fanfic could be Ahsoka and Luke teaming up to face a new Sith threat. Ahsoka's experience with the Clone Wars and her knowledge of the Force could combine with Luke's Jedi training. They might travel to a long - forgotten planet in search of an ancient Jedi artifact that could help in their fight against the dark side.
One possible plot could be that Luke Skywalker turns to the dark side and starts committing crimes against the New Republic in order to gain more power for himself. He might start stealing valuable artifacts or information that could give him an edge. Another plot could be that he is framed for crimes he didn't commit and has to go on the run, trying to clear his name while also being hunted by the authorities. A third plot could involve Luke being under the influence of an evil force or entity that makes him act in a criminal way, and his friends have to find a way to break the influence and save him.