It could enhance his ability to customize his ninja tools. For example, he might be able to make kunai that are sharper and more durable, giving him an edge in combat. Also, if he can smith special tools that can better channel his chakra, like a new type of shuriken, his ranged attacks could become more powerful.
His chakra control would be a huge advantage. He could use it to precisely manipulate the heat of the forge, ensuring the perfect temperature for the metal. Also, his speed and reflexes, honed as a ninja, would allow him to work quickly and accurately when shaping the metal.
Well, losing an arm would definitely have a huge impact on his ninja abilities. His ability to perform hand seals would be severely hampered. For example, complex jutsus that require multiple and quick hand seals might become impossible for him to execute. Also, his balance in combat could be affected as he's used to having two arms for movement and defense. He'd probably have to rely more on his legs and other non - arm - related skills.
In some fanfictions, Naruto's growth spurt might make him more physically powerful. He could have increased strength and speed, which would enhance his taijutsu skills. For example, his punches could become more forceful, allowing him to take on stronger opponents more easily.
One possible plot twist could be that Naruto discovers he has a natural affinity for a special type of metal that is only found in a hidden realm. This metal has unique properties that can enhance his ninja tools in unexpected ways. Another could be that the smithing skills he learns are actually part of an ancient prophecy. It was foretold that a ninja with Naruto's spirit would master smithing to create a weapon that could save the ninja world from a great threat that is yet to come.
Well, it could potentially enhance his balance and agility. Just like a real monkey, the tail might act as an extra limb for Naruto. He could use it to swing from trees or structures in the ninja world more easily, giving him an edge in forest - like battle terrains. Also, it might be used for some unique jutsu combinations, like using it to direct the flow of his chakra in a more precise way.
Learning Rasengan in fanfiction can be a turning point for Naruto's character. It can make him more independent. He doesn't have to rely as much on others for protection. His self - belief skyrockets. He starts to see himself as a real ninja. This change in his self - perception can lead to him taking more risks for the greater good. It also might make him more humble in a way. He realizes that with great power comes great responsibility, and he doesn't let the power of Rasengan go to his head.
Naruto's ability to sense danger, like he does in the ninja world, would help him protect his Pokemon from threats. His Rasengan could be used as a model for a new and powerful Pokemon move. Also, his leadership skills as a ninja could lead him to form a strong Pokemon team and train them in a more disciplined way compared to other trainers.
Well, Naruto's ninja abilities are a big part of who he is. In his role as a Pokemon trainer, his speed and agility would be a great advantage in Pokemon battles. He could dodge attacks more easily and position his Pokemon better. His chakra control could potentially be related to how he communicates with his Pokemon or how he uses items to boost their power. His ability to endure tough situations from his ninja training would also mean he could handle long and difficult Pokemon - training sessions or battles without getting tired easily. This would make him a very formidable Pokemon trainer in the fanfiction world.
Naruto's ability to use chakra would be a major factor. He could use it to demonstrate amazing feats to the students, like creating clones to help with group activities or using his Rasengan in a controlled way to show the power of concentration. His ninja speed would also make him a very active teacher, able to be everywhere in the classroom or training ground quickly.
His ninja abilities could give him an edge in the Duel Monsters world. For instance, his enhanced speed and reflexes from being a ninja might help him react quicker during duels. He could be able to dodge attacks from opponent's monsters more easily compared to regular duelists.