It could be that Naruto is too trusting of outsiders in the fanfiction. He allows some suspicious characters into the village without proper vetting, and they end up causing trouble. This shows a lack of judgment on his part as a Hokage, which is why the fanfiction might claim he is a bad one.
One possible plot point could be Naruto making a big mistake in a battle strategy. For instance, he might underestimate an enemy's strength due to his over - confidence, leading to heavy losses for the village. This would definitely contribute to the view of him being a bad Hokage.
A significant plot point could be Naruto's efforts to reform the ninja academy. He might want to change the way ninjas are trained to better prepare them for the future. He could also face challenges from within his own group of friends. Some might feel left out or not important now that Naruto is in such a high - ranking position, and Naruto would have to balance his friendships with his new responsibilities.
One idea for the main plot is that a group of rogue ninjas has developed a new and dangerous jutsu that can disrupt the balance of power in the ninja world. Naruto, in his role as Hokage, decides to take action. Sasuke, as an Anbu, is sent to infiltrate the group. As Sasuke gets closer to the truth, he finds that the leader of the rogue ninjas has a personal vendetta against Naruto. This forces Sasuke to race against time to stop the jutsu and protect Naruto and the village. Along the way, Sasuke also has to come to terms with his own past actions and how they might affect the current situation.
One plot point could be that Sarutobi has been misusing the village's funds for his own personal gain. Tsunade discovers this and decides to expose him. She then has to fight against Sarutobi's supporters to bring justice to the village.
One possible plot could be that Naruto is somehow transported to a different timeline where he has to fight the Hokage for a misunderstanding. Maybe there's a villain who has manipulated events to make the Hokage think Naruto is a threat. So Naruto has to fight not only to prove his innocence but also to save the village from the real danger that the villain poses.
Maybe Naruto has always idolized the Hokage in secret. He could be studying the ways of past Hokages on his own, trying to learn their leadership skills and jutsu. For example, he might be secretly practicing Minato's Flying Thunder God Technique because he admires his father so much.
The fanfiction could be about Naruto's struggle to adjust to a normal life after being Hokage. He might feel a bit lost without the constant stream of paperwork and decision - making. So, he starts to explore his hobbies, like fishing. Meanwhile, he still has to deal with some remnants of old enemies who are trying to take advantage of his retirement, and he has to use his skills and influence in a different way to protect Konoha.
Often, Naruto in these fanfictions starts by learning from the previous Hokages. He might have visions or conversations with them. Through this, he learns about leadership values such as sacrifice and long - term planning for the village's prosperity.
One possible plot could be Naruto dealing with the post - war reconstruction. He might focus on rebuilding the village, strengthening relations with other villages, and also mentoring the new generation of ninjas. For example, he could start new training programs inspired by his own experiences.
In this fanfiction, Naruto might go back to the time when he was a child. He could use his future skills and wisdom to outwit his enemies from that time, like Orochimaru. He could also help his friends, like Sasuke, in a different way. Maybe he could prevent Sasuke from leaving the village in the first place. This would lead to a completely different story arc for both of them and for the whole Konoha village.
One possible plot could be Naruto having to prove himself to the village elders. He might start by implementing new training programs for the younger ninjas, inspired by his own journey. He could also focus on improving relations with other villages, using his charisma and unique perspective as someone who was once an outcast.