Well, a possible plotline is that Naruto has to deal with the fact that he has the power of the Kyuubi in a more innate way. Maybe he discovers that he can access certain abilities that are unique to being the son of Kyuubi, like a deeper connection to the chakra of the nine - tailed beast. There could also be a plotline where the Akatsuki target him not just for the Kyuubi's power but because of his special connection to it as its son. And his own village might have to decide whether to protect him or sacrifice him for the greater good.
One common plotline is Naruto's discovery of his true parentage. He might initially be shocked or in denial but then gradually come to accept it. Another is his training to master the combined powers of the Kyuubi and Juubi. This often involves seeking out ancient scrolls or mentors who have some knowledge about these powerful entities.
A plotline could be that Naruto has to keep his true parentage a secret for a long time. This secrecy adds to his internal conflict as he tries to fit in with the other ninjas. As the son of Kyuubi and Kushina, he may be hunted by certain groups who want to either use his power or destroy it. He then has to go on a quest to find out more about his parents and his own identity, all while fending off these threats.
One common plotline is the Kyuubi teaching Naruto new and powerful jutsu. Since the Kyuubi has a vast amount of chakra and knowledge, it could share unique techniques with Naruto that are not part of the regular ninja training. Another plotline could be the Kyuubi's influence on Naruto's relationships. For example, some fanfictions explore how Naruto's connection with the Kyuubi affects how his friends and villagers perceive him. It can also lead to some interesting character development as Naruto has to learn to control the Kyuubi's power without being consumed by it.
A potential plotline could be Severus trying to keep Harry's true parentage a secret from Voldemort. He'd be constantly worried about Voldemort finding out and using Harry against him.
One potential risk is losing control. The Kyuubi's power is wild and Naruto might find it difficult to keep his sanity while using it.
One plotline could be Naruto being transported to the Mandalorian universe. He has to learn the ways of the Mandalorians while still relying on his ninja skills. Another could be a Mandalorian coming to the Naruto world and Naruto teaming up with him, sharing their combat knowledge. For example, Naruto could teach the Mandalorian about chakra, and the Mandalorian could teach Naruto about their advanced weaponry.
One implication could be a different power dynamic. Naruto would have an even stronger connection to the Kyuubi's power. He might also face different kinds of discrimination or fear from the villagers as being related to the Kyuubi.
Well, a common plot point could be Naruto having special powers that come directly from being the son of the Kyuubi. For example, he might be able to communicate with the Kyuubi in a more profound way. This could lead to him learning new jutsu or techniques faster. Also, the story could explore how the ninja world reacts to this revelation. Some might see him as a greater threat, while others might see him as a potential ally against future threats.
One potential plot could be Naruto struggling to control his new mini Kyuubi form. He might accidentally cause some chaos in the village while trying to figure out how to use his powers.
There could be a storyline where Naruto's mini Kyuubi form attracts the attention of other villages. Some might want to capture him to study his new form, while others might see him as a threat to the balance of power. Naruto then has to deal with the political implications of his transformation. He might have to prove that he is still the same Naruto who wants peace, just with a new power that he can use for the greater good.