One common plot element could be Naruto facing a great betrayal. For example, the village he loves turns against him due to false accusations. This would push him to become more self - reliant and badass as he has to fight against his former allies. Another element might be him training in a new and extremely powerful form of jutsu that no one has ever seen before. This new power would make him feared and respected, giving him that badass edge.
Often, there's the exploration of new social relationships. For instance, the character who becomes female might form new female friendships and experience different types of interactions compared to when they were male. Also, there could be a plot about dealing with the reactions of others, like family, friends, or society at large. Some fanfics might include a love interest, where the new - found femininity plays a role in the romantic relationship, either attracting a different type of partner or changing the dynamics of an existing relationship.
Well, one possibility is that Naruto somehow gets his chakra corrupted and starts to develop a mechanical-like form similar to Ultron. He could begin to see the ninja world as full of flaws that need to be 'fixed' in a more extreme way, like Ultron's view of humanity. He might start creating his own versions of 'ninja drones' to enforce his new order.
One idea could be Naruto having to adapt to the different social expectations placed on girls in the ninja world. For example, she might struggle with the more restrictive clothing styles at first but then find ways to make it her own while still being a capable ninja. Another plot point could be how her relationships with other characters change. Sasuke might initially be confused by Naruto's new form but then come to see that she's still the same person deep down. Also, Naruto as a girl could inspire a new generation of female ninjas in the village, showing them that they can be just as strong and important as male ninjas.
One 'badass naruto fanfic' could be where Naruto masters a new and extremely powerful jutsu early on. For example, he might learn a space - time ninjutsu that allows him to instantly teleport across the battlefield, catching his enemies off - guard. This would completely change the dynamics of his fights and make him seem even more badass.
In 'naruto bankrobber fanfic', often there is a conflict between Naruto and the authorities or other ninja who are trying to stop him. This adds an element of tension to the story. Also, there could be a backstory about how the situation in the village led Naruto to this extreme. Maybe there are corrupt officials who are misusing the village's funds, and Naruto decides to take matters into his own hands by robbing the bank that holds those ill - gotten gains. The fanfic might also explore the moral dilemma that Naruto faces, as he is usually a hero, but is now breaking the law.
One common plot element is the idea of Naruto uniting the ninja world under his leadership in a more forceful way compared to the original story. He might have to overcome resistance from within his own village as well as from other villages. There could be a lot of character development as he grapples with the moral implications of his actions as a conqueror. He may start out with good intentions but find that the path to 'conquering' and being a hero is not as straightforward as he thought, leading to a lot of internal and external conflicts throughout the fanfic.
Often, in these fanfics, Naruto's superpower is related to some sort of prophecy. The story might revolve around the idea that he is the only one who can defeat a great evil with his new - found superpower. His superpower could also have side effects that he has to deal with. For instance, it could be draining his life force but he still has to use it to save his friends and the village. And sometimes, the superpower allows him to enter new dimensions or realms that are not part of the original Naruto world, opening up all sorts of new adventures.
One possible plot development could be Naruto facing opposition from some of the village elders who still doubt his capabilities. They might try to set up various challenges or tests for him to prove he's worthy. Another aspect could be Naruto's struggle to balance his new responsibilities with his personal life. He'd have to deal with diplomatic issues among other villages while still finding time for his friends.
One possible plot could be that Naruto starts having more conversations with Kyuubi in his mind. At first, they argue a lot as they have different views. But as time passes, Naruto starts to understand Kyuubi's past and the pain it has endured. Kyuubi, in turn, sees Naruto's determination and kindness. They gradually start to work together during battles, sharing their powers more effectively and eventually becoming true friends who trust and respect each other.
Well, a great plot twist could be that Naruto, as a cat, gets adopted by Sasuke unknowingly. Sasuke then starts to notice some strange things about this cat, like it seems to understand complex ninja concepts when he talks about them. This could lead to some really interesting interactions as Sasuke tries to figure out what's so special about this cat. And maybe Naruto, in cat form, has to protect Sasuke from a new threat without revealing his true identity.