The traditionalist elders might oppose Naruto. They are used to the old ways of running Konoha and may see Naruto's takeover as a threat to their power and influence.
Well, in such a fanfiction, Naruto might take over Konoha to reform it. Maybe he's tired of the old ways and wants to make it more inclusive and fair for all ninjas, regardless of their background.
If Kyuubi takes over Naruto in fanfiction, Naruto might become a much more powerful and uncontrollable force. His appearance could change, perhaps taking on more fox - like features. He would likely lose his sense of self and act on the Kyuubi's primal instincts, which could lead to chaos in the Hidden Leaf Village as he would no longer be the friendly and determined ninja they knew.
If Kurama takes over Naruto in fanfiction, it could lead to a shift in the power dynamics. The village might be in danger as Kurama's takeover could mean Naruto loses his usual self - control. But on the other hand, it could also open up new storylines where the other characters have to find a way to bring Naruto back, perhaps by appealing to their past bond or using some long - forgotten jutsu.
One possible consequence could be that Naruto grows up away from the influence of Konoha's shinobi culture. He might develop a different set of values and skills. For example, without the guidance of Iruka and Kakashi, his understanding of ninjutsu and teamwork could be very different. Also, his relationships with characters like Sasuke and Sakura would be greatly affected. Maybe he wouldn't have the same rivalry with Sasuke, and his bond with Sakura might not even form.
A 'naruto takes revenge on konoha fanfic' might involve Naruto feeling betrayed by Konoha. Maybe he was wrongly accused of a crime he didn't commit. As a result, he teams up with some of his old enemies who also have grudges against Konoha. Together, they plan a large - scale attack on Konoha. Naruto, with his newfound power and allies, aims to topple the current regime in Konoha and establish a new order where justice is truly served.
If the Kyuubi takes over Naruto in fanfiction, it could change the whole plot. Naruto might lose his sense of self. His body would be dominated by the Kyuubi's raw power. Enemies could see this as an opportunity to take advantage of the situation. However, some fanfictions might show Naruto gradually regaining control with the help of his inner will or the support of his friends.
The story could develop with Naruto becoming a villain of sorts. He might start attacking other villages or even his own, leading to a big conflict. His friends would then be on a mission to save him.
The elders of Konoha could be the main antagonists. They are often the ones making the big decisions in the village. If Naruto is seeking revenge, it could be because of their actions, like how they treated him when he was a child or how they might have hidden important information from him.
Konoha's regret in these fanfics can also be a means to create interesting plot twists. It can lead to scenarios where Konoha tries to make amends with Naruto. Maybe they send out emissaries to bring him back or offer him some sort of compensation. This regret can also fuel Naruto's character development as he has to decide whether to forgive Konoha or not.