In the extended batman nolanverse fanfiction, a great plot could involve the return of a character thought to be dead. For example, if Ra's al Ghul had a secret plan to come back and take over Gotham in a more insidious way, using the chaos left by the previous events. This would force the remaining characters, like Commissioner Gordon, to take on a more active role in protecting the city without Batman's immediate help.
One interesting plot idea could be exploring what happens to Gotham after Batman's final battle in Nolan's movies. Maybe a new villain emerges, inspired by Batman's legacy but with a more twisted view.
Perhaps a plot where the technology developed by Lucius Fox for Batman falls into the wrong hands. A group of tech - savvy criminals could use it to create a new kind of threat in Gotham. This would not only be a physical danger but also a threat to the city's privacy and security as they could hack into all kinds of systems. And the people of Gotham would have to find a way to fight back, maybe with the help of a new hero or a group of vigilantes inspired by Batman.
Commissioner Gordon is another popular character. He is the link between the police force and Batman. In fanfiction, his role can be expanded, such as him taking on more risks to keep Gotham safe when Batman is not around, or his relationship with other characters like Barbara Gordon can be delved into more deeply.
Perhaps they could start off as rivals in the fanfiction. Batman from the present is skeptical of Batman Beyond's more high - tech approach. But as the story progresses, they learn from each other and become a great team. For example, Batman could teach Batman Beyond some of his old - school detective skills, while Batman Beyond shows Batman new ways to use technology in combat and surveillance.
One idea could be exploring what if Bruce Wayne's identity as Batman was exposed accidentally by a new high - tech surveillance system in Gotham. Another could be a story where Batman has to take on a new identity temporarily to infiltrate a secret criminal organization that has been studying his every move as Batman.
A plot could involve a time - travel scenario where Batman and Supergirl are sent back in time to prevent a major event that would change the future of both their worlds. They would have to work together, using their different skills and knowledge of their respective eras.
One idea could be exploring the relationship between Batman and Robin in a more emotional depth. Maybe Robin is going through a tough time at school and Batman has to balance being a mentor and a crime - fighter. Another could be a time - travel plot where the Bat - family gets sent to different eras in Gotham's history and has to adapt and still fight crime.
One idea could be that Batman and Robocop team up to take on a powerful criminal organization that is using high - tech weaponry. They would combine Batman's stealth and detective skills with Robocop's firepower and law enforcement programming.
One idea could be Batman using his detective skills to uncover a hidden threat that the Avengers initially overlook. For example, he might notice some small, seemingly insignificant details during a battle scene that lead him to a much larger conspiracy.
One idea could be exploring the psychological state of Batman during Knightfall more in - depth. Maybe focus on his nightmares and how they affect his decisions in the story. Another could be a what - if scenario where a different character takes on the role of protecting Gotham during Knightfall, like Oracle guiding a team of young vigilantes.
One idea could be exploring Batman's internal struggle in the Injustice universe more deeply. Maybe he has a nightmare where he becomes like the tyrannical Superman, and this makes him question his own actions and methods even more.
A possible plot idea is that Batman discovers a way to bring back some of the fallen heroes from different Batverses. This could lead to a story where he has to convince these heroes to fight alongside him again, while also dealing with the consequences of messing with the fabric of the Batverse. He could face opposition from some characters who believe this will disrupt the balance of the multiverse.