There could be a fanfiction where Gavriel mentors a young character in a different way than in the books. In this fanfic, he might teach them about the history of his people in a more personal and detailed manner. This could lead to a whole new set of interactions and plot developments within the 'Throne of Glass' universe.
One interesting Gavriel 'Throne of Glass' fanfiction could be one where Gavriel has an adventure before joining the main story's events. It might explore his past and his relationship with other characters in more depth. Maybe he has a secret mission that shapes his personality and skills that we see in the original series.
One interesting 'Throne of Glass' Dorian fanfiction could be those that explore his relationship with other characters in-depth. For example, fanfictions that focus on his friendship with Chaol and how it changes over time. Another type could be ones where Dorian discovers new magical abilities and how he copes with them.
You can start by looking on popular fanfiction websites such as Archive of Our Own (AO3). It has a large collection of 'Throne of Glass' fanfictions, and you can easily search for ones specifically about Gavriel. Fanfiction.net is also a good option. There are many dedicated fans who post their works there, and you might find some great Gavriel - centered stories.
One great Throne of Glass Evangeline fanfiction is 'Evangeline's Adventure'. It explores her character in a new setting, away from the main plot. It shows her growth and how she copes with different challenges.
Some non - smut fanfictions might be based on alternate timelines. For instance, what if Celaena had made different choices at certain points in the story? These fanfictions can be really interesting as they offer a fresh perspective on the existing plot. They can also explore how the other characters would react to these changes and how it would ultimately shape the world of 'Throne of Glass'.
One great fanfiction could be 'Celaena's New Adventure' which might explore Celaena's journey in a different light, perhaps with new characters she meets during her slave days. It could add more depth to her character and her struggles.
One idea could be a fanfiction that focuses on an alternate ending where the main character makes a different choice at a crucial moment. Maybe she decides not to trust a certain ally and it completely changes the course of the story.
The concept of the cadre's role in different political situations within the Throne of Glass world is also fascinating. How they interact with the various kingdoms, whether they support or oppose certain rulers, and how their actions shape the political landscape.
One idea could be exploring Fenrys' backstory more deeply. Maybe show his life before he became part of the cadre. Another could be a love story involving Fenrys and a new character, perhaps a healer who tends to his wounds during a battle and they gradually fall in love. A third idea is to put Fenrys in an alternate universe where the events of Throne of Glass unfold differently, like if he was the one to find Celaena first.
One idea could be exploring Celaena's life before the events of the main series. Maybe her training with a different, more secretive mentor. Another could be a story where she has to team up with her enemies from the series for a common greater threat. For example, the king's men and Celaena having to work together to stop a dark magic invasion.
One idea could be exploring Celaena's further training in a more in - depth way. Maybe she discovers a new, ancient form of magic during her training that she has to master. Another could be a love triangle that gets more complicated, with a new character entering the fray and causing tension between Celaena and her existing love interests.