I'm not sure who the absolute best is, but some popular ones might be those who have a deep understanding of the Batman and Nightwing characters. Maybe authors who have been following the comics for a long time.
One interesting plot could be that they team up to take on a new and powerful villain in Gotham. Maybe this villain has some unique powers that force Batman and Nightwing to combine their skills in unexpected ways.
It can symbolize protection. Batman is the mentor, and when he carries Nightwing, it shows his instinct to keep Nightwing safe from harm, whether it's physical harm from villains or other threats.
In this fanfiction, often there's a power struggle. Nightwing, with his own set of skills and experiences independent from Batman, might oppose Batman on certain principles. Maybe it's about different approaches to crime - fighting. Nightwing could be more lenient while Batman is strict.
Well, Nightwing is his own person with his own experiences related to Batman. Fanfiction often takes creative liberties. He might hate it because it sometimes creates scenarios that he doesn't feel are respectful to their real - life (in the context of the story) interactions. He values the authenticity of their relationship, and fanfiction can sometimes undermine that with wild and untrue ideas.
In some 'Batman Nightwing Dies' fanfiction, it could lead to Batman's descent into a darker state. He might become more vengeful and isolated. For example, he could start to question his whole approach to crime - fighting and his role in Nightwing's life.
One common theme is mentorship. Batman as a mentor to Nightwing is often explored, showing how he trained Nightwing and the values he instilled. For example, in many fanfictions, we see how Batman taught Nightwing about justice and the importance of protecting the innocent.
In some fanfiction, there could be an emotional outburst. Batman has a lot of pent - up emotions, and if Nightwing accidentally triggers him by saying something about his past, like his parents' death or his own failures, Batman might lash out and slap him. It's a way to show the complex and often damaged psyches of these characters in the fan - created stories.
One great 'Starfire Meets Nightwing' fanfiction is 'A Bond Beyond Stars'. It beautifully explores their relationship in a post - apocalyptic setting. The story delves deep into their characters, showing how Starfire's optimism and Nightwing's leadership skills complement each other.