Naruto's abilities would develop quite differently. Firstly, his understanding of chakra nature would be very limited at a younger age. He might not even be aware of his own chakra nature for a while. His ability to learn new jutsu would be slower too. Instead of quickly learning new techniques like in the canon, he'd have to spend more time on each one. His ability to use the Nine - Tails' power would be more erratic. For example, it could manifest in ways he can't control, like sudden bursts of power during training. And his teamwork skills, which are important in the ninja world, would take longer to develop. He'd be more focused on proving himself individually rather than working well with others at first.
If Naruto became a girl, her self - confidence might develop in new ways. Instead of relying solely on brute strength and determination like she did as a boy, she could start to use her femininity as a tool. For example, she could be more diplomatic in negotiations because she's seen as less of a threat in her new form. Her relationships with male characters would also be different. She might become more aware of their feelings towards her and have to navigate those in a more delicate way.
Naruto's values could change. For example, if he was adopted into a family that values peace above all else, he might strive to resolve conflicts in a more diplomatic way rather than through fighting. His ninja path could be more about preventing wars and building bridges between villages rather than just becoming the strongest shinobi.
Naruto would likely be more conflicted. Knowing he's related to Madara, who was a major antagonist, would make him question his own identity. He might be more secretive about this part of his heritage at first.
His abilities might take on a more unpredictable edge. He could incorporate some of Joker's trickery into his combat. For example, using misdirection like Joker does in his schemes.
Naruto might become more in tune with nature. Since Hashirama was known for his strong connection to nature through his Wood Style, Naruto could develop a similar sense. This would not only affect his fighting style but also his overall view of the world around him.
His social skills might be underdeveloped at first. Since he was raised by wolves, he may not understand human social cues and norms easily. He could be more solitary and have trouble making friends in the beginning.
Naruto might become more calculating. Since Danzo is known for his strategic thinking, Naruto could pick up on that. He may not be as impulsive as in the original story.
Well, Naruto would be extremely overpowered. He could probably fly around the Hidden Leaf Village instead of using his normal ninja transportation methods. His strength would be off the charts, allowing him to easily lift huge boulders or even buildings without using chakra. His speed would also be enhanced, making him almost uncatchable in combat. This new set of abilities might make him a bit more reckless at first, as he gets used to the power, but over time, he would learn to use it more responsibly.
His character development would take a very different path. Naruto would likely be more introverted in some ways. Since he has his family's love and support, he doesn't need to constantly seek validation from others. He'd be more focused on his family's expectations and traditions. His values would be more in line with those of his parents. For example, he'd have a deeper understanding of loyalty and sacrifice from an early age. He might not be as impulsive either, as his parents would be there to guide him and teach him to think before acting.
In fanfic, their relationship could develop more amicably. Unlike in canon where Vader is fully on the dark side and they are enemies, in fanfic they might start as enemies but quickly realize they have more in common than they thought. For instance, they both have a strong connection to Anakin Skywalker. This could lead to a more understanding relationship where they work together against common foes.