Another plot idea is the family's reaction to Naruto's jinchuriki status. In the original, Naruto was mostly alone in dealing with it. But with his family alive, they could support him. His mother, Kushina, could share her own experiences of being a jinchuriki, and together they could find new ways to control the Nine - Tails' power.
Maybe the story could revolve around how Naruto's family being alive affects the political situation in the Hidden Leaf. His father, as a former Hokage, might have different ideas on how to handle relations with other villages. This could lead to new alliances or conflicts, all while Naruto is growing up in a more complete family environment.
One idea could be Naruto traveling to different dimensions where he meets alternate versions of female characters and they all form a sort of harem around him. Another could be that after a powerful jutsu, Naruto is transported to a realm where the rules of life and death are different, and he has to deal with female characters who have their own motives regarding his presence in this new world.
You could also write about Naruto's family during a time of peace. How they interact with the other families in the village, and how they pass on the values of the ninja way to the next generation. It could include family outings, training sessions that are more about bonding than combat, and the family's role in maintaining the positive atmosphere in the village.
Another plot could involve the Kyuubi having a more sentient and family - like relationship with Naruto's family. It could communicate with them in dreams and offer advice or warnings. For example, it might warn them about upcoming threats to the village that Naruto alone might not be able to handle. This would create a unique dynamic where the family has to work with the Kyuubi for the greater good.
A really interesting plot for 'kakashi and naruto family fanfiction' could be that Kakashi accidentally stumbles upon a secret power within Naruto's family that has been dormant for generations. He then helps them unlock and control this power. Along the way, they form a stronger bond as a family. And as Kakashi is involved, he also rediscovers some of his own values and beliefs through this process.
One idea could be exploring Kushina's life before Naruto was born in more detail. Maybe show her training as a Jinchuriki and how she met Minato. Another could be a story where Naruto gets to time - travel and meets his mother when she was his age. It would be a great chance to see their relationship develop in a different way.
A great plot for 'naruto and boruto family fanfiction' could be a time - travel story. Boruto somehow gets sent back in time to when Naruto was a kid. He has to keep his identity a secret while also trying to prevent certain events from happening that could change the future for the worse. At the same time, he gets to see a different side of Naruto and the family dynamics back then, and this experience changes his perspective on his own family.
Well, you could focus on the relationship between the jinchuuriki and their extended family members in the fanfiction. For instance, how does the jinchuuriki's relationship with their grandparents change when they find out about the tailed beast? Also, a plot could revolve around the family trying to help the jinchuuriki control the power of the tailed beast. They could seek out ancient scrolls or wise sages to learn techniques that would make it easier for the jinchuuriki to co - exist with the beast.
One idea could be exploring Kushina's life before Naruto was born in more detail. Maybe show her training as a jinchuriki and how she met Minato. Another could be a story where Naruto discovers a hidden journal of Kushina's that reveals family secrets and advice for him.
One idea could be exploring Naruto's relationship with his father in more depth. Maybe Naruto discovers some hidden jutsu that his father was working on before he passed away. Another could be about Naruto and Hinata raising their kids and the challenges they face as a family in a post - war Konoha.
Perhaps in this fanfiction, Naruto and Konan's families are brought together because of a mysterious illness that only their combined family lineages can cure. They have to search for ancient remedies and along the way, they learn about each other's family histories and traditions. Their kids could play a crucial role in finding the cure, using their own budding skills and the bond between the two families.