A great Spike fanfiction could be set in an alternate universe where Spike was turned into a vampire by a different vampire than in the original lore. This change could lead to a whole new set of relationships and power dynamics for him in the Vampire Diaries world. He might have different alliances and enemies, and the story could show how he adapts to this new reality.
One interesting Vampire Diaries fanfiction could be about an alternate universe where Elena is a vampire from the start. It changes the whole dynamic of her relationships. Another might focus on Damon and Bonnie's friendship, exploring how they could team up in different ways than in the show.
A really cool Vampire Diaries fanfiction story could be one where the Salvatores and the Mikaelsons team up against a greater evil. This would be a great way to see different characters with their own motives working together. There are also fanfictions that focus on the human side of things more. For instance, a story about Matt's life and how he copes with all the supernatural chaos around him, and how he might even find a way to fight back using his own human strengths.
One interesting story could be about Jeremy exploring his new vampire powers in a way that the show didn't fully explore. For example, he might use his vampire abilities to protect the town from a new threat that's not related to the typical vampires or werewolves. Maybe he teams up with some unexpected characters to fight this new danger.
There are many talented writers out there. Some popular ones are often those who have a deep understanding of Spike's character from Buffy the Vampire Slayer and can blend it well into the Vampire Diaries universe. But it's really subjective. Some fans might prefer writers who focus on his more sarcastic and bad - boy side, while others like those who explore his deeper emotions.
A really cool Vampire Diaries mermaid fanfiction could involve a mermaid being a key to unlocking an ancient vampire or werewolf curse. Since mermaids often have a connection to magic in many mythologies, she could use her magic to either help or hinder the characters in their attempts to break or enforce the curse.
One interesting Henrik fanfiction could be about Henrik's untold adventures in the afterlife. Maybe he has some secret powers that he discovers there and how that could potentially affect the storylines in 'The Vampire Diaries' universe.
One interesting Vampire Diaries Mafia fanfiction could be 'The Dark Underworld of Mystic Falls'. It might explore how the vampire and werewolf clans interact with the mafia elements in the town. Another could be 'Mafia Alliances in Mystic Falls' which delves into the power struggles between different factions including the mafia and the supernatural beings. There are also ones that focus on a particular character like Damon getting involved with the mafia to protect Elena in a fanfic called 'Damon and the Mafia's Deal'.
One interesting Vampire Diaries harem fanfiction could be where Elena is in a harem with Damon, Stefan, and Klaus. In this story, they all have to work together to protect the town from a new supernatural threat while dealing with their complex relationships. The author might explore how Elena manages to keep the peace between the three very different and often jealous vampires.
Some Vampire Diaries Heretic fanfictions focus on the origin of the heretics. They might explore how they were created and what led to their unique combination of vampire and witch powers. It could involve a long - lost spell or a dark experiment in the past that is slowly being uncovered in the story.
One interesting aspect in Silas - related Vampire Diaries fanfiction could be his relationship with other characters. For example, how he might interact with Elena or Damon in alternate scenarios. Maybe he uses his powers in different ways than in the show.