Another storyline might involve Batman leaving because of a personal crisis. For example, he discovers something dark about his past that makes him question his place in the Justice League. He might think that he's a liability to the team and decide to leave to protect them.
Yes, there might be. You can try searching on fanfiction websites like Archive of Our Own or FanFiction.net. There are a large number of fan - created works out there, and with the popularity of Naruto and the Justice League, it's quite possible that someone has combined the two in a 'godlike' way in their fanfiction.
Wonder Woman would probably respect Batman's decision. However, she would also be concerned about the void his departure would leave in the team. She might start taking on more of a leadership role to fill the gap, while also hoping that Batman would return one day.
Maybe Naruto's character essence is so different from the Justice League that he seems out of place in that fanfiction context. His ninja world values and his own story arc are unique to his universe, and being mashed into Justice League fanfic just doesn't feel right to some people, and perhaps that's how the idea of 'Naruto hates Justice League fanfiction' comes about.
Naruto would fit in by being the energetic and determined member. His loud and boisterous personality would contrast with some of the more reserved members of the Justice League. His physical abilities, like his superhuman strength and speed gained from his ninja training, would make him a valuable addition in battles.
In this fanfiction, Naruto might use his ninja skills. His shadow clone jutsu could be a great asset. He could send clones to gather information about the threat the Justice League is facing. Then, with his Rasengan, he could directly attack powerful enemies. Also, Naruto's ability to endure and keep fighting could inspire the Justice League members when they are in a tough situation.
Naruto's strong sense of justice and his will to protect his friends and village are qualities that would make him a great addition to the Justice League. He could relate to Superman's desire to protect the world and Batman's commitment to justice. Also, his growth as a ninja could be paralleled with the growth of the Justice League as a team, learning from each other's experiences and skills.
The storyline could focus on Batman forming his own team. He might gather some of his old allies or even some new characters. This new team could operate in Gotham and deal with threats that the Justice League might overlook.
No, there's no real evidence. It's just a concept that might have emerged from fans who are purists about Naruto's world. They might think that Naruto belongs only in his own ninja - themed story and not in the world of Justice League fanfiction. But it's not like there are any statements from the Naruto creators or the story itself to prove this 'hate' relationship.
One possibility is that Naruto's unique ninja skills would add a new dimension to the Justice League's combat capabilities. His shadow clone jutsu could be used for various strategic purposes, like scouting or creating diversions. His rasengan could also be a powerful offensive weapon against super - villains. Also, Naruto's strong sense of justice and his never - give - up attitude would inspire the other members of the Justice League.