In such a fanfiction, Naruto could easily defeat any enemy. He might be able to single - handedly end all the wars in the Naruto world. For example, he could take on the Akatsuki by himself and quickly dismantle their plans without breaking a sweat.
If Naruto has unlimited strength in the fanfiction, it would change his relationships too. His friends might start to view him differently, perhaps with a mix of awe and a bit of fear. He could also become a sort of god - like figure in the ninja villages. He might use his strength to train the next generation in a way that was never possible before, and the ninja arts could evolve in completely new directions because of his influence.
Well, with unlimited strength, Naruto would probably rewrite the power structure of the ninja world. He could use his strength to enforce peace in a more direct way. He might also be able to explore the secrets of the ninja world that were previously too dangerous to approach, like the most hidden parts of the Sage of Six Paths' history.
In such a fanfiction, Naruto would be extremely powerful. He could spam his powerful jutsus without getting tired. For example, he could keep using Rasengan continuously in battles, overwhelming his opponents. His Shadow Clone Jutsu would be even more fearsome as he wouldn't have to worry about chakra depletion when creating a large number of clones.
He could become more confident, bordering on overconfident. Since he has unlimited strength, he might not face the same challenges in terms of combat, so his development would shift towards moral and ethical challenges.
In such a fanfiction, Naruto might start to reshape the ninja world entirely. He could create new jutsus that are unimaginable with normal power limits. He could also travel to different dimensions effortlessly to learn more about the secrets of chakra and ninjutsu, and then bring back that knowledge to improve the lives of everyone in his own world.
In this fanfiction, Naruto might use the Omnitrix to gain various alien forms' powers. He could use those powers to fight stronger enemies in the Naruto universe, like the Akatsuki members. Maybe he would use the powers for stealth or super strength depending on the alien form.
The plot might revolve around how Naruto uses his power to deal with the long - standing problems in the ninja world. He could use it to find a cure for all the ninja - related diseases. And as for the political situation, he could influence the daimyos to make more just decisions for the ninja villages. His relationships with other characters would also change. Some might be in awe of him, while others might be jealous or even afraid.
If Naruto had Wolverine's power in fanfiction, it would change his fighting style completely. He'd no longer have to rely solely on his chakra. His adamantium - like claws could cut through the toughest defenses in the ninja world. Also, his endurance would be off the charts, allowing him to fight for days without getting tired, just like Wolverine.
Well, Naruto would become extremely powerful. He could use Sinbad's magic powers along with his own ninja skills. Maybe he could fly around the Hidden Leaf Village like Sinbad on his magic carpet and use his powers to protect the village in ways he couldn't before. It would be a really cool combination.
Naruto would likely become even more powerful. With the Sharingan, he could copy jutsus more easily, which would be a huge advantage in battles. He might also gain some of the Uchiha's unique abilities like seeing through illusions better.
In a fanfiction where Naruto secretly has the Rinnegan, he would become an even more formidable force. His combat abilities would skyrocket. He could potentially use the powers of the Rinnegan, like the Six Paths techniques, in addition to his existing Sage Mode and Nine - Tails chakra. This would make him a major threat to any enemy. He might be able to travel between dimensions more easily and have better control over life and death, just like Madara and Sasuke did with their Rinnegan.
Enemies might target him more. With such great strength, he would be seen as a huge threat. Other ninja villages or evil organizations might try to eliminate him or steal his power. He would have to constantly be on guard and develop new strategies to defend himself.