One idea could be that Naruto discovers his alien mother left him with special powers that are not from the ninja world. For example, he might have the ability to manipulate energy in ways unseen in the Hidden Leaf Village. Another plot could involve Naruto's search for his mother's home planet, leading him on an intergalactic adventure where he meets all kinds of alien species and has to use his ninja skills in new and unexpected ways.
A possible plot could be that Naruto's alien mother was a scientist on her planet. She experimented with combining their alien genetics with something she discovered about the ninja world from afar. Naruto is the result of this experiment. As he becomes aware of his alien heritage, he has to deal with the fact that there are other alien factions that either want to protect him as a unique being or destroy him as an abomination. His friends in the village might initially be skeptical but eventually help him face this new and strange threat.
One idea could be exploring Kaguya's past in more detail before she became the mother of Naruto's lineage. Maybe show her life on her home planet and what led her to consume the chakra fruit. Another could be a story where Kaguya somehow returns in Naruto's time and has to face the new world she helped create, with all its different ninja clans and jutsu.
Maybe a fanfiction where the mothers come back to life for a short time. Naruto and Sakura get to experience a mother - child relationship they never had. Their mothers could offer advice on their ninja training and personal lives. For example, Naruto's mother could teach him more about his Uzumaki heritage and Sakura's mother could give her tips on how to be a better medic - ninja.
One idea could be Naruto finding a hidden journal of his mother's that reveals family secrets. Another could be his mother appearing in a dream to give him advice on how to handle a difficult situation in the village. Maybe she could also guide him in learning a new jutsu that was passed down in the family.
Some fanfictions might explore how the alien bloodline affects the characters' relationships. For instance, a character with an alien bloodline might have a hard time fitting in with their peers at first. But as they grow and learn to control their powers, they could form strong bonds with other outcasts. Or they might be hunted by certain groups who see their alien bloodline as a threat to the existing power structure in the ninja world.
One idea could be an alien exchange student in a human academic setting. The alien has to adapt to human teaching methods and social norms while also hiding their unique alien abilities. Another could be an academy on an alien planet where different species come to study advanced technologies and inter - species relations are explored.
One idea could be that the resurrected alien has some new powers. Maybe it can now blend into its surroundings like a chameleon, which adds a new level of danger. Another could be that the alien forms an alliance with a group of humans who are outcasts from society, and together they try to take over a powerful corporation.
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 idea could be that Amanda discovers a way to communicate with the Alien on a basic level. Maybe she uses her engineering skills to create a device that emits frequencies the Alien can understand. Another could be that Amanda and the Alien form an unlikely alliance against a common enemy, like a group of rogue Weyland - Yutani employees who have their own malicious plans for the Alien.
One idea could be that an alien vampire infiltrates Ben's team. It pretends to be a friendly alien at first but then starts to slowly drain the energy of the other aliens. Ben has to figure out a way to expose it without endangering his friends.
One idea could be an alien race coming to Kuoh Academy with unique powers that the devils, angels and fallen angels have to deal with. For example, an alien race that can manipulate time, causing chaos in battles and daily life.