One consequence in the fanfic could be the fall of the Jedi Order. With Anakin's betrayal, he was able to lead the Clone Troopers against the Jedi. Many Jedi were killed, and their temples were destroyed. This led to the near - extinction of the Jedi, which had a huge impact on the balance of the Force in the galaxy.
In many fanfics, Anakin's betrayal by the Jedi could be due to a sense of being marginalized. The Jedi Council often treated him with suspicion because of his age and his strong connection to the Force. They didn't fully trust him and this made Anakin feel isolated. For example, they didn't grant him the rank of Master, which he felt he deserved. This sense of being undervalued could be a significant factor leading to his betrayal in fanfics.
In many fanfictions, Anakin's betrayal by the Jedi Council is often depicted as a complex web of misunderstandings and power plays. One common take is that the Council's secrecy and lack of trust in Anakin, especially regarding his relationship with Padmé, pushed him towards the dark side. They constantly held him at arm's length, not fully accepting him despite his great power.
One common theme is Anakin's sense of alienation. He often feels like he doesn't belong in the Jedi Council. Another theme is power struggle. His great power makes the Council both rely on him and be wary of him. And then there's the theme of prophecy. His role as the Chosen One is always in the background, influencing how the Council treats him and how he views himself.
Perhaps in this fanfic, Naruto is forced to make a choice between his ninja values and the Jedi code. He might choose something that the Jedi don't agree with, like using his chakra in a way that goes against their light - side - only beliefs. The Jedi then shun him, making Naruto feel betrayed. He might then try to find his own path, separate from both the ninja world and the Jedi order.
Sure. There's a fanfic called 'Anakin and the Jedi Council: A New Perspective'. In this one, the author gives a fresh take on Anakin's interactions with the Council. It shows how his raw power and different way of thinking both intrigue and worry the Council members. Also, 'Anakin's Place in the Jedi Council' is a fanfic that really focuses on the power dynamics between Anakin and the rest of the Council.
In this fanfiction, Anakin could interact with the spirit of Yoda. Yoda has a connection to both Anakin and the events in 'The Last Jedi'. Their exchange could be really interesting as Yoda has his own wisdom to impart and Anakin has his own experiences. Also, Anakin might interact with Leia. He knew her well in his own time, and in 'The Last Jedi' she is still an important figure. He could be proud of her leadership in the Resistance or have some concerns about the path she's leading her people on.
If that were the case, the galaxy's fate would likely have been very different. Maybe they could have avoided the conflicts and tragedies that came with Anakin's Jedi path. But who knows how other forces would have shaped events without the Jedi's influence.
One plotline could be that Naruto is tricked into believing the Jedi are hiding a great power that could save his world but are being selfish about it. So, he decides to steal it from them, which is seen as a betrayal. Another could be that he falls in love with a character who is an enemy of the Jedi, and for love, he turns against them.