A third plot might be that they travel to a time way before the founding of the ninja villages. Here, they could witness the origin of ninjutsu and the early clans. They may try to influence the development of the ninja world from its very roots, perhaps even trying to create a more unified and peaceful ninja society from the start without all the future conflicts that were based on old grudges and power struggles.
In many time travel fanfictions, their relationship often becomes more understanding. Since they already know each other well in the future, when they travel back, they can skip the initial hostilities. For example, if they go back to their academy days, Sasuke might not be as cold to Naruto as he was originally because he already knows Naruto's true nature and what they will go through together in the future.
Sakura is a very popular character to include. She has a long - standing relationship with both Naruto and Sasuke. Her medical ninjutsu skills can be very useful in various plot situations. Kakashi is also popular. His experience and unique jutsu can add depth to the story. Another popular character is Shikamaru. His intelligence can be a great asset in devising strategies against enemies.
Their relationship would be one of mutual respect. Naruto, as Hokage, would trust Sasuke's abilities as an Anbu member. Sasuke, on the other hand, would respect Naruto's leadership. They would be comrades again, but with a new dynamic due to their different positions in the village.
One possible plot could be that fem Naruto travels back in time to her younger self. She uses her knowledge as a Hokage to prevent certain tragedies. For example, she could stop Sasuke from leaving the village in the first place. This would change the whole course of events in the Naruto world.
One great Sasuke, Naruto, and Sakura time travel fanfiction is 'Time - Twisted Bonds'. In this story, they are sent back to their childhood days with their present - day knowledge. It's really interesting to see how they interact with their younger selves and try to change things for the better. Another good one is 'Journey Through Time' where they travel to different points in the Naruto timeline and face challenges that were not part of the original story.
A great plot could be that there is a curse that starts to affect all the ninja in the village and only Naruto and Sasuke's combined chakra can break it. They must embark on a journey to find the source of the curse. Along the way, they discover secrets about the past Hokages and how to better lead the village. Or perhaps a plot where Sasuke, who has been away from the village for a long time, returns and is shocked to see Naruto's new Hokage - like leadership style. He decides to challenge Naruto not in a fight but in a contest of who can better protect and improve the village, leading to a series of events that show their different approaches.
A really interesting plot in Hokage Naruto time travel fanfiction could be Naruto traveling to a time during a great war in the past. He could use his skills and knowledge from the future to turn the tides of the war. Maybe he would form unexpected alliances with past ninja, or he could introduce new strategies that were developed in his time. This would not only change the outcome of that war but also have a huge impact on the future of the ninja world.
Well, it depends on the specific fanfiction. Some fanfictions might explore alternate storylines where Naruto doesn't become the Hokage at all. Maybe he decides to pursue a different path in life, like focusing on being a teacher or an explorer. However, in a large number of fanfictions, he does achieve his goal of becoming the Hokage because it's such an iconic and desired outcome for fans who want to see his journey to the top in different ways.
One idea could be the Nanadaime Hokage (Seventh Hokage Naruto) traveling back in time to his younger self's era. He could use his knowledge of future events to prevent certain tragedies, like the death of some of his comrades. Maybe he could change the way he approached his training, leading to even greater power earlier on.