What are some interesting ideas in 'avatar the last aibender fanfic'?

In some cases, secondary characters from the original series could be promoted to main characters in the fanfic. For example, Toph's earthbending students could take on more prominent roles and drive the story forward with their own adventures and challenges.

One plot idea could be exploring an alternate timeline where Aang fails to defeat the Fire Lord initially. This would lead to a world dominated by the Fire Nation, and the remaining benders having to form a secret resistance. Another idea is a fanfic where Zuko and Katara's relationship develops in a very different way, perhaps they become rivals instead of friends. Or it could be about Toph starting her own earthbending academy in a far - off land, with new and unique students.

One idea could be exploring the backstory of a minor character from the Avatar world in the sequel fanfic. For example, a Na'vi who was on the fringes of the main events but has their own interesting journey. Another could be a story about the first human - Na'vi hybrid, dealing with identity issues and being a bridge between the two cultures. Or perhaps a fanfic that focuses on the restoration of a part of Pandora that was damaged during the events of the movie, showing how the Na'vi and any sympathetic humans work together to heal the land.

One idea could be to explore the backstories of the avatars in the brotherhood. Maybe they all come from different worlds or cultures and how they came together to form the brotherhood. Another could be a story about a new avatar joining the brotherhood and facing challenges to be accepted.

One idea could be a crossover where Naruto characters learn bending techniques from Avatar characters. For example, Naruto might try to master water bending, which could be a really cool concept as he already has control over his chakra, and adapting it to bending could create some unique fight scenes.

One idea could be a crossover with the Harry Potter universe. The Avatar characters could attend Hogwarts and learn magic while also using their bending abilities. For example, Aang could use his airbending to enhance his flying on a broomstick. Another idea is a crossover with the Star Wars galaxy. The benders could be like Jedis, using the Force which is somewhat similar to bending the elements. They could help the Rebels in their fight against the Empire.

One idea could be a crossover with 'Harry Potter'. The Avatar could visit Hogwarts and learn about magic there. Maybe Aang could teach the students about bending while learning about spells himself. Another idea is a crossover with 'Lord of the Rings'. The airbenders could fly over Middle - earth and help in the fight against Sauron. They could use their bending skills to create distractions or help in battles.

One idea could be to have the Voltron pilots end up in the Avatar world. They could learn bending techniques and use their Voltron skills in combination with them. For example, Keith's swordsmanship might blend well with waterbending moves in a fight.

Perhaps Ben, while exploring a new planet in his travels, stumbles upon a world that has a very Avatar - like culture and power system. He has to learn to use their ways in combination with his alien forms to survive. For example, using Heatblast's heat powers in a more refined way similar to firebending.

One idea could be exploring the backstory of Zuko's mother in more detail. Maybe she had secret adventures or relationships that could add depth to the story. Another could be a time - travel fanfic where Aang goes back to before the Air Nomad genocide and tries to prevent it. Or a story about Toph starting an earthbending school in a different nation, like the Fire Nation, and how she overcomes the cultural differences.