Some fanfictions could focus on Anakin's body in terms of his training as a Jedi. They might describe how his body was honed through rigorous Jedi training, with a focus on his agility, strength, and reflexes. His body was a tool for the Jedi Order, and fanfictions could explore the toll that training took on him, as well as how he overcame physical challenges.
A great Anakin Solo fanfiction is 'Anakin Solo: The Jedi's Redemption'. This fanfic may focus on Anakin's redemption arc, similar to that of his grandfather, Darth Vader. It could show him facing his inner demons, his connection to the dark side, and his journey back to the light. The story might include his interactions with other characters like his family members and friends, and how they influence his path to redemption.
One interesting Dark Anakin fanfiction could be one where he fully embraces the dark side earlier than in the movies and tries to reshape the galaxy according to his own vision. He might form new alliances with Sith Lords from the past.
One interesting fanfic could be where Anakin and Ahsoka go on a secret mission together. They might face challenges that test their bond as master and apprentice even more. For example, they could encounter a new Sith threat that requires them to use their combined skills to defeat.
One interesting fanfiction could be where Anakin gets his body back through some ancient Sith or Jedi ritual. Maybe a hidden Jedi Master discovers a way to reverse the damage caused by his transformation into Darth Vader.
One great fanfiction could be about Anakin and Padme's secret meetings during the Clone Wars. Maybe it focuses on how they struggle to keep their relationship hidden while Anakin is constantly on the front lines. Another could be a story where Padme gets involved in a Clone Wars battle in an unexpected way, with Anakin having to protect her and fight at the same time.
Perhaps a story where Anakin and Barriss are both sent on a diplomatic mission to a war - torn world. They have to negotiate peace between two warring factions. Their different views on the Force and how to use it in such situations could cause some friction at first, but eventually they find a way to work together and bring about a truce.
One interesting fanfiction could be about a clone who manages to resist Order 66 due to a unique bond with a Jedi. Maybe he has memories or experiences that make him question the order. Another could focus on the Jedi who survive Order 66 and how they come together in secret to plan their revenge against the Sith. And there might be a fanfiction that delves into the emotions of the clones during Order 66, like the internal conflict they feel between their programming and their personal relationships with the Jedi.
One interesting fanfiction could be where Fives discovers a hidden Sith plot that the Jedi are unaware of. He then has to find a way to expose it without being seen as a traitor. This could involve him teaming up with some unlikely allies.
One interesting fanfiction could be about the 501st's adventures in uncharted planets during the Clone Wars. They might encounter strange alien species and have to use their combat skills and teamwork to survive.
One common theme is the struggle against the Jedi Code. Since Jedi are not supposed to form romantic attachments, Anakin and Ahsoka would have to deal with that in these fanfictions. Another is the idea of forbidden love, which adds a sense of drama.