One possibility in this fanfiction could be that Naruto gains new and unique combat skills. Monkey D. Dragon is known for his revolutionary ideas and powerful abilities in the 'One Piece' world. Under his training, Naruto might learn different ways of strategizing and approaching battles, perhaps incorporating some of the more unorthodox fighting styles from the 'One Piece' universe. This could lead to Naruto becoming even more formidable, not just in terms of his ninjutsu, but also in his ability to lead and inspire others in a different way, much like how Dragon has an impact on the 'One Piece' world.
In this fanfiction, Naruto's world view could be greatly expanded. Monkey D. Dragon's exposure to different cultures and ideas in the 'One Piece' world could open Naruto's eyes to new possibilities. He might start to question the traditional shinobi ways and look for more inclusive and revolutionary approaches to maintaining peace in the ninja world. For example, he could learn about the importance of overthrowing oppressive systems, which is a central theme in Dragon's ideology. This would add a new layer of depth to Naruto's character as he tries to balance these new concepts with his existing ninja values.