Well, it could be that Naruto gets some kind of elemental powers from the comet. Maybe the comet is associated with a new, rare element that Naruto can then manipulate. This new power could give him an edge in battles, as his opponents would be unfamiliar with it. He could use it in creative ways, like combining it with his existing jutsu to create even more powerful attacks.
Well, he'd probably be even more of a badass. His already formidable combat skills combined with Wolverine's healing factor and adamantium claws would make him nearly unbeatable. He could take on stronger foes without worrying much about getting hurt. And his speed and agility from his ninja training, along with Wolverine's berserker rage, would create a really interesting and powerful character in the fanfiction world.
Well, Naruto would become extremely powerful. His combat abilities would likely be enhanced with the unique powers of arrancars. He could gain new forms and techniques. Maybe he'd have a zanpakuto-like weapon with special abilities, which would add a whole new dimension to his fighting style. Also, his speed and strength might increase exponentially, making him even more of a force to be reckoned with in the Naruto universe.
Well, if Naruto gets Shinigami powers in a fanfiction, he could potentially gain the ability to manipulate souls. He might be able to use the Shinigami's scythe in combat, which would be a really cool and unique weapon. Also, he could have new forms of jutsu related to the soul realm.
Some fanfictions might give Naruto the power of elemental fusion. He could combine fire, wind, water, earth, and lightning in ways that are not possible in the original series. This would make his attacks extremely powerful and unpredictable. For instance, he could create a storm of lightning - infused water that not only electrocutes his enemies but also drowns them.
Well, Naruto could use his telekinesis powers in combat. He might be able to disarm his opponents without even touching them. Just by using his mind, he could send their weapons flying. For example, against Sasuke, he could stop Sasuke's sword attacks mid - air and then take the sword away from him. It would be a huge advantage in battles.
In the fanfiction, Naruto could gain the power of enhanced perception. The Kyuubi's bloodline might give him the ability to sense things from a much greater distance, whether it's the presence of other ninja, hidden traps, or even changes in the environment. Additionally, he might have better control over his own emotions and be able to resist mind - control techniques more effectively. This is because the Kyuubi's bloodline could strengthen his mental fortitude, making it harder for enemies to manipulate his thoughts or feelings.
One potential power could be the ability to manipulate fire in a unique way. The Kyuubi has a lot of raw power and in a fem form, it might manifest as a different type of elemental control. Naruto could use this newfound power to create more powerful fire - based jutsus or even combine it with his existing techniques in a more effective manner. Another power might be enhanced speed. The Fem Kyuubi's bloodline could give Naruto the ability to move at blinding speeds, making him a more formidable opponent in combat.
Well, Naruto getting the Seven Deadly Sins powers would likely change his relationships. His friends might be a bit wary of him at first, especially if he got the power of Envy. He could start to envy others' skills or powers in a way he never did before. But on the other hand, if he had the power of Kindness (the opposite of some of the sins), he could use it to bring out the best in his friends and foes alike.
His powers would change a great deal. Naruto is known for his brute strength and his ability to never give up. The Sharingan would add a whole new layer of finesse to his fighting style. He could use the Sharingan's genjutsu capabilities to trap his enemies in illusions before hitting them with a powerful chakra - infused punch. Also, he could use it to analyze his opponents' weaknesses more quickly, allowing him to adapt his fighting strategy on the fly.
Perhaps he gets a power related to mind control. This would allow him to influence the actions of his enemies or even make them fight among themselves. He could also gain a power that lets him absorb the powers of his defeated foes. So, every time he defeats an enemy, he becomes stronger by adding their powers to his own arsenal.