One plot idea could be that a female Akatsuki member is secretly in love with Naruto but is conflicted because of her loyalty to the Akatsuki. She might find herself in situations where she has to choose between helping Naruto or following the Akatsuki's orders. Another idea is that Naruto tries to redeem a female Akatsuki member. He believes in the good in her and tries to convince her to leave the Akatsuki and join the side of the village. A third plot could involve a female Akatsuki member being sent on a mission to spy on Naruto, but ends up befriending him and seeing a different perspective on the world.
Another idea is a time - travel plot where Naruto is sent back in time and meets a younger version of a female Akatsuki member. He tries to change her path and prevent her from joining the Akatsuki. This would involve a lot of character development and exploration of their different worldviews.
One idea could be Naruto joining the Akatsuki but secretly working to reform it from within. He could try to change the views of members like Hidan and Kakuzu by showing them a different way of life. Another plot could involve Naruto being sent on a mission by the Akatsuki that makes him question his loyalty to the group. For example, if the mission is to harm innocent people, Naruto would have to find a way to complete the mission without actually causing harm.
One idea could be Naruto joining the Akatsuki for a secret mission to infiltrate a greater evil organization. He has to hide his true intentions from the Akatsuki members while also trying to understand their motives better.
One plot idea could be Hinata getting caught in the middle of a conflict between Naruto and the Akatsuki. Maybe she tries to use her Byakugan to spy on the Akatsuki for Naruto but gets discovered. This could lead to a tense situation where Naruto has to rescue her.
One idea could be that some members of the Akatsuki start to question their mission after getting to know Naruto better. For example, Itachi might secretly help Naruto in his fight against the Akatsuki while still pretending to be on their side. This would add a lot of mystery and tension to the story.
A possible plot for Naruto Akatsuki Family Fanfiction is the Akatsuki members raising a child together. This child could be a powerful being that they found or created. They would have to teach the child their ways, and in the process, the Akatsuki members might change themselves. For instance, Hidan might become more patient while teaching the child about their beliefs, and Kakuzu might learn to be more giving when it comes to providing for the child's needs.
One idea could be the Akatsuki members having to protect baby Naruto for some mysterious reason. Maybe they were tasked by a powerful entity to keep him safe from other dangerous forces in the Naruto universe.
One idea could be a story where an Otsutsuki member infiltrates the Akatsuki. They could have their own secret motives that conflict with the Akatsuki's goals, like using the Akatsuki as a tool to gather more chakra for their own clan's needs. Another plot could be about a young Naruto being mentored by an Otsutsuki in secret, and how this affects his relationship with the Akatsuki later on. Maybe he tries to persuade them to change their ways using the knowledge he got from the Otsutsuki.
A plot where the Chibi Akatsuki has to babysit some of the younger characters in the Naruto universe. This would lead to all sorts of comical situations as they try to handle the energetic kids. Also, a story where they discover a hidden power within their chibi forms that they have to learn to control and use against a new threat could be really interesting.
One idea could be an Akatsuki member having a change of heart and trying to secretly help Naruto. For example, Itachi could be in a situation where he has to guide Naruto without revealing his true identity to the rest of the Akatsuki.