One interesting plot idea could be exploring different character backstories more in - depth. For example, delving deeper into the history of side characters like Kiba and his family. Another could be a rewrite of major battles with different outcomes, like if Sasuke had lost his fight with Itachi.
A really interesting plot could be a time - travel fanfiction. Naruto and Temari are sent back in time to a crucial moment in the history of their villages. They have to work together to make sure the events unfold in a way that doesn't change the future too drastically, but also helps to prevent some of the darker events that occurred in their past.
In this type of fanfiction, there could be a plot where a strange disease starts affecting ninjas' chakra systems. Naruto has to lead the search for a cure, which takes him on a journey across the ninja world. Along the way, he discovers secrets about the origin of chakra that were long forgotten. This could also lead to some interesting character development for other supporting characters as they face this new crisis together.
One interesting plot idea could be Naruto's son, Boruto, facing a new and powerful enemy that has ties to an ancient evil from the past that was thought to be sealed away long ago. This enemy could be manipulating the new generation of shinobi in the Hidden Leaf Village, causing chaos and mistrust among them.
Another idea is a story where Anko discovers a new power within Naruto that no one else has noticed. This could lead to her taking Naruto under her wing in a more personal training session, different from the ones he has had with Kakashi or Jiraiya. It could be a story of Anko helping Naruto unlock this hidden potential while also dealing with her own past traumas related to Orochimaru.
One idea could be a male OC who is a long - lost relative of a major clan. For example, he could be related to the Uchiha clan but was hidden away for some reason. His journey to discover his heritage while also trying to fit into the shinobi world during the Naruto Shippuden era would be full of drama and action. He could struggle with the power of the Sharingan if he inherits it, and deal with the expectations and suspicions of others.
One idea could be exploring a character's backstory who was wrongly imprisoned in the Blood Prison. For example, a shinobi who was framed by a powerful enemy and has to prove their innocence while dealing with the harsh conditions and dangerous inmates in the prison.
One idea could be exploring the new generation's struggle with the legacy of the past wars. They might have to deal with hidden enemies that were remnants of the old Akatsuki. Another could be the discovery of a new chakra type among the new gen, which leads to a whole new set of jutsus and training methods.
One idea could be exploring an alternate universe where the characters have different careers. For example, Keitaro could be a famous artist instead of a student aiming for Tokyo U. Another could be a time - travel plot where a character goes back in time and tries to change the events that led to the current situation in the 'love hina' world. Maybe they try to prevent some of the misunderstandings that often occur among the characters.
A 'naruto shippuden den redux fanfic' is probably a fanfiction that aims to remix or redo elements of Naruto Shippuden. It could be centered around changing the plot, for instance, making Naruto face different challenges or have different powers. It may also play with the timeline, like having events happen earlier or later than in the original. Additionally, it could be about exploring different cultural or emotional aspects of the Naruto universe that were not fully explored in the original series.
Definitely Naruto, his growth and development are always a central focus. Hinata might be more popular in this fanfiction as there could be more exploration of her relationship with Naruto. And Rock Lee, his determination and unique fighting style make him stand out and could be more emphasized in the redux fanfiction.