The fanfiction could change the Naruto universe by introducing new threats. With Naruto so powerful, there could be forces that emerge to try and counterbalance his strength. Also, the story could explore different ways of using chakra, as Naruto's merged state might have unique chakra abilities. It could also affect the way ninjas are trained, as they might try to achieve a similar level of power.
A 'godlike Naruto merged with Juubi' fanfiction would have a huge impact on the Naruto universe. Firstly, the concept of power would be redefined. Naruto's new state would be far beyond what was previously thought possible. This could inspire other characters to strive for greater power in different ways. Secondly, the political situation in the ninja world would be shaken. The villages might either seek Naruto's protection or try to undermine him. Thirdly, the fanfiction could introduce new forms of jutsu and combat styles, as Naruto's merged form would likely have unique fighting capabilities that others would try to emulate or counter.
Well, if Naruto merged with the Juubi in a fanfiction, it could lead to some really interesting plot developments. His already strong ninja skills combined with the Juubi's power would be a game - changer. Maybe he would use this new power to finally bring true peace to the shinobi world. He could also face new enemies who are jealous or afraid of his godlike powers.
His personality might become more intense. The Juubi's power could make him more assertive. He might be less hesitant in making tough decisions.
He could fit in as a super - powerful outsider. His Juubi powers would make him stand out, but his Naruto - like personality of being friendly and determined would help him make friends. He might use his powers to help the school during times of crisis, just like he did in his own world.
Well, it changes the power dynamic. With Naruto sealed away, the villages that once relied on his strength would be in a more vulnerable position. His friends and allies would also have to find new ways to protect their homes. It might lead to new alliances forming as different groups try to fill the power vacuum left by Naruto.
If Naruto merged with the Juubi in fanfiction, it could completely change the Naruto universe. His physical strength would skyrocket. Imagine him being able to withstand attacks that would normally obliterate a normal ninja. His Sage Mode and other forms might be enhanced to a level that we can't even imagine. And he might develop a new form that combines his own features with those of the Juubi, making him look both like himself and the fearsome beast.
The power dynamics would shift significantly. Firstly, Naruto's influence over the Juubi would likely give him control over a vast amount of chakra, more than he already has. This could lead to him being able to easily overpower most opponents. Allies might rely on him even more, and enemies would be more cautious. For example, villages that were once rivals might be more inclined to form alliances with Konoha because of Naruto's new position. Also, the tailed beasts' relationships with Naruto would become more complex as he is now linked to their origin in a very different way.
Naruto could change the story by providing new ways to fight Titans. His ninjutsu skills would give the humans an edge. For example, his ability to move quickly and stealthily like a ninja could be used to gather information about the Titans more effectively.
If Naruto had Arrancar powers, he might gain the ability to use Cero, which is a powerful energy blast. This could replace his Rasengan in some ways, or he could combine them for an even more devastating attack. His movement would also become more like an Arrancar's, perhaps with the ability to move at high speeds in a more fluid and menacing way. And his appearance might change, with some Arrancar - like features, which would shock his friends and foes alike.
If Naruto learned magic in a fanfiction, it could completely change the power dynamics in the Naruto universe. For example, his already formidable combat skills combined with magic could make him nearly unbeatable. He might be able to use magic to enhance his jutsu, like adding an element of fire magic to his Fireball Jutsu to make it even more powerful. Also, it could change his relationships. His friends might view him differently, either with awe or a bit of envy. And his enemies would surely be more afraid of him, forcing them to come up with new strategies to deal with this magically - enhanced Naruto.
If Naruto were killed by Kushina in a fanfiction, it would completely shatter the Naruto universe as we know it. Naruto is the main character, and his death would mean the end of his journey to become Hokage and bring peace. All the relationships he had built, like with Sasuke, Sakura, and his other friends, would be left in ruins. It would also mean that the prophecy about him might not be fulfilled, leading to a darker and more chaotic future for the Hidden Leaf Village.