Another plot could be that Naruto's adopted mother is secretly related to one of the main antagonists. She has to hide this fact from Naruto while also trying to guide him to be a great ninja. This creates a lot of internal conflict for her and also adds an interesting layer of mystery to the story as Naruto might start to notice some strange behavior from her.
Perhaps his adopted mother is a Muggle with a special connection to the magical world. She raises Harry in a Muggle - like environment but also imparts some ancient magical wisdom she's inherited. This would create an interesting dynamic where Harry has to balance his two different worlds even more so than in the original story.
Another plot could be that Naruto is adopted by an older ninja who has retired from active duty. This ninja has a lot of wisdom and secrets. Under his guidance, Naruto discovers a new power within himself that was hidden all along.
One idea could be that Naruto's mother has a special connection to the moon. Maybe she left a hidden message or power related to the moon for Naruto. For example, the moon could be a key to unlocking a new form of chakra that Naruto inherits from her.
One idea could be a story where Naruto discovers a long - lost diary of Tsunade's mother. Through reading it, he uncovers secrets about the village's past that help him in his journey to become Hokage. For example, it might reveal hidden jutsu or the true nature of some old rivalries within the village.
Well, one plot could be that fem Naruto is adopted by a group of wandering ninjas. They teach her unique and unorthodox ninja skills. She then uses these skills to help her when she finally returns to Konoha and has to prove herself to the skeptical villagers.
One idea could be that they grow up with a new sense of family loyalty. They might support each other in ways different from the original story. For example, Sasuke could be more open about his feelings because he has Naruto as a true brother. Another plot could be them facing challenges together that are specifically related to their adopted family status, like dealing with the expectations of their new family or protecting their new family from threats.
One plot idea could be Naruto discovers a hidden diary of his mother that reveals secrets about their clan. Another could be that his mother's spirit appears to guide him during a difficult mission. For example, Naruto is facing an enemy with a strange and powerful jutsu he can't figure out. His mother's spirit then gives him hints on how to counter it by using a long - forgotten Uzumaki technique.
One interesting plot idea could be exploring how Kaguya's presence affects Naruto's early life. Maybe she's in hiding and secretly guiding him, teaching him some unique jutsu that are related to her own powers. This could lead to Naruto having an even greater advantage against his enemies early on.
One idea could be Naruto being adopted by a League of Legends champion from Ionia, like Karma. She could teach Naruto about the spiritual balance in Ionia, which is somewhat similar to the chakra balance in Naruto's world. And Naruto could bring his ninja skills to help protect Ionia from threats.
Maybe Naruto is adopted by a family outside of the Hidden Leaf village. This would force him to adapt to a new culture and way of life. He could learn different chakra - control techniques or even new forms of ninjutsu that are specific to that village. It could also create a conflict when the Hidden Leaf needs his help but he has loyalty to his new home as well.