He might gain the ability to control the tailed beasts more directly. Since the Gedo Statue has a connection to the tailed beasts, Naruto could potentially use this new power to better communicate with them or even draw on their strength more easily.
Naruto might be ostracized by some in the ninja world. People could be afraid of his new power, especially if they don't understand it. They might see him as a threat, similar to how they once feared the Uchiha for their powerful Sharingan. So, he may have to deal with a lot of distrust from his comrades and the general public.
He might gain the power of omnipotence. Just imagine, he could be able to control all the elements at will, not just the ones he already knew like fire, water, etc. He could also have the power to teleport anywhere in an instant, which would make him an even more formidable opponent in battles.
Naruto could potentially gain the power of infinite chakra. Since the Ten - Tails is a source of massive chakra, absorbing it may give Naruto an unending supply, allowing him to use high - level jutsu continuously without getting tired.
In some fanfictions, if Naruto absorbs Gedo Mazo, he might gain incredible power. This could potentially change the entire power dynamic in the Naruto universe. He could use the dark chakra within the Gedo Mazo in unexpected ways, perhaps even finding a way to purify it and use it for good.
He might gain a more powerful form of Rasengan, like a Rasengan that can change its shape and properties according to the situation. Maybe he has better control over his Nine - Tails chakra and can use it in more creative ways without losing control.
He might gain enhanced physical strength like Bane. Bane was known for his brute force, so Naruto could have a similar boost, being able to overpower his opponents more easily in hand - to - hand combat.
They could gain new powers through scientific experiments. For instance, if a character like Orochimaru were to study the atomic nature in this fanfiction concept, he might find a way to infuse atomic properties into a ninja's body, thus granting new abilities. This could involve things like the ability to emit radiation - like chakra that can either heal or harm depending on how it's controlled.
Yes, it could be considered a relatively new concept as the amount and variety of fanfiction has exploded in recent years, and the idea of Naruto 'absorbing' these diverse fan - created ideas is something that has emerged as a result of the growing and evolving fan culture.
In some fanfictions, Naruto might gain the ability to absorb Samehada through a special encounter. Maybe he discovers an ancient jutsu that allows him to connect with Samehada on a spiritual level and absorb its power.
In this type of fanfiction, Naruto could potentially gain the power to control water more proficiently as Uzushiogakure was known for its water - based jutsu. Maybe he'd also gain some unique sealing techniques that were passed down in Uzushiogakure.