Well, Naruto's skills like his shadow clones could be a great asset. He could use them for various tasks on the ship, from cleaning to helping in battles. His determination would also match the Straw Hats' spirit.
Luffy would probably be excited. He loves having new and interesting people on his crew. Zoro might be a bit cautious at first but would come to respect Naruto's fighting skills. Nami would see Naruto as someone who could be useful for his abilities.
In such a fanfic, there might be a lot of interesting character dynamics. The admiral would have to adjust to the Straw Hats' carefree and family - like atmosphere. There could be conflicts at first, as the admiral is used to a more rigid military structure. But over time, they could grow to love and protect their new crewmates just like the others.
One great rival could be a character with a powerful Devil Fruit ability. For example, a character who has a Logia - type Devil Fruit that allows them to turn into a natural element like lightning. This would make them very difficult to defeat in combat as they could dodge attacks easily. They could also use their element - based powers to attack the Straw Hat Pirates in unexpected ways, such as sending bolts of lightning towards their ship.
In a fanfiction where Naruto joins the Straw Hats, the dynamic of the crew would change significantly. Naruto is used to working in teams in his own world, and his experience in forming strong bonds with his comrades would blend well with the Straw Hats' own sense of camaraderie. His ability to make friends easily would also help him fit right in. Plus, his shadow clone jutsu could be used for various tasks on the ship, like helping with repairs or keeping watch.
Well, he would probably make the Straw Hats extremely powerful. His ninja skills like shadow clones and rasengan could be used in creative ways during battles at sea. For example, he could use shadow clones to man the ship while the others fight or use rasengan to blast away powerful sea monsters.
The Straw Hat shinobi could be a new character who combines the characteristics of both Naruto - style shinobi and One Piece pirates. He might wear a straw hat like Luffy and have ninja abilities.
Well, it could be about a shinobi who somehow gets involved with the Straw Hat crew in a world where Naruto and One Piece universes collide. Maybe the shinobi has some special abilities that are useful to the crew on their adventures.
Well, one possibility is that Naruto, after being banished, finds a small, struggling village. He brings his unique skills and determination there. Maybe he helps them improve their defenses against other threats in the ninja world. He could also train the local ninja, sharing his knowledge of powerful jutsu.
One possibility in the 'Naruto banished joins Akatsuki' fanfiction is that Naruto's presence would create a lot of internal conflict. Some members of Akatsuki might see him as a threat to their plans, while others might be intrigued by his power and ideals. Naruto, on the other hand, might be constantly torn between his loyalty to the Hidden Leaf (even though he was banished) and his new position in Akatsuki. He could also try to use Akatsuki's resources and connections to find out more about his own past and the secrets of the ninja world that the Leaf Village might have been hiding from him.