The plot might involve Naruto having to adjust to the new world of RWBY while also dealing with his own godlike status. He could end up teaching the RWBY characters some of his jutsu, like the Shadow Clone Jutsu, which could be useful in battles against large numbers of Grimm. And perhaps there would be some sort of conflict where his powers are both a help and a hindrance, like attracting unwanted attention from powerful enemies in the RWBY world.
One possible fanfiction could be about Naruko traveling to different dimensions in the Naruto universe and meeting alternate versions of her friends and enemies. She might learn new jutsus or gain unique powers from these encounters.
One great 'Dimension Travel Naruto Fanfiction' is 'A New Path in Another World'. In this fic, Naruto gets transported to a different dimension where the ninja world has some unique and strange rules. It's really interesting to see how he adapts his skills to this new environment.
Naruto's powers would be quite unique in RWBY. His ability to create shadow clones could be used for scouting or for overwhelming opponents. His Rasengan could be a powerful attack against Grimm.
One possible main antagonist could be a powerful being that controls the different dimensions and sees Naruto's hopping as a threat to his order. Another could be an evil version of Naruto from another dimension who wants to stop our Naruto from spreading his 'good' influence. Maybe a group of rogue dimension - travelers who are causing chaos in different dimensions and Naruto has to stop them.
One interesting Naruto immortal dimension travel fanfiction could be 'Journey Beyond the Known Realm'. In it, Naruto discovers a hidden portal that leads to an immortal dimension. There, he meets ancient beings who teach him new jutsu. It's a great read for those who love exploring new concepts in the Naruto universe.
In a Juubi dimension travel fanfiction, Naruto could be on a mission to stop an enemy who has opened a portal to the Juubi dimension. As he enters, he realizes that the laws of nature are completely different. His chakra abilities are either enhanced or restricted. He teams up with a native of the dimension who teaches him how to navigate and use the energy of the Juubi dimension to his advantage. Eventually, he manages to close the portal and save both his world and the Juubi dimension from destruction.
One great 'Naruto Dimension Travel Crossover Fanfiction' is 'Naruto in the Marvel Universe'. In this story, Naruto is transported to the Marvel world. He brings his unique ninja skills and chakra system, which creates interesting interactions with the superheroes there. His ability to use shadow clones, for example, surprises many characters. Another good one is 'Naruto and the World of Harry Potter'. Here, Naruto enters the magical world of Hogwarts. His combat skills are quite different from magic, yet he finds ways to adapt and even teaches some of the students about his ninja way.
One idea could be Naruto arriving in a dimension where chakra doesn't exist and he has to learn new powers. Another could be him meeting alternate versions of his friends in different dimensions, like a super - evil Sasuke in one dimension. Maybe he also discovers a dimension where the Akatsuki are the good guys and he has to figure out how to work with them.
Well, in some Naruto fanfictions about dimension travel, Naruto might end up in a dimension where the tailed beasts are the dominant species. He then has to figure out how to communicate with them and maybe even form alliances. Or he could travel to a dimension where there is no chakra, and he has to learn new forms of power to survive and find his way back.