Roy Harper's fate in the comics is not straightforward. Sometimes he's shown as dead, but comic universes are constantly evolving, and his status can change based on various creative decisions and story developments.
Well, the way Roy Harper died in the comics varied depending on the specific comic run and storyline. Sometimes it was due to a powerful villain's attack, while other times it was part of a larger narrative twist.
For Will Harper, his character could be developed by exploring his past traumas more deeply. Maybe in the fanfiction, he has flashbacks to his difficult childhood which Artemis helps him through. This would make him more empathetic and show his growth.
There could be a fanfiction where Will Harper and Artemis are both framed for a crime they didn't commit. They have to go on the run and clear their names. During this time, they rely on each other's skills. Will's street - smart knowledge and Artemis's archery and combat skills are put to the test. As they dodge the law and the real culprits, they grow closer and realize that there's more to their partnership than they initially thought.
One common theme is the struggle with identity. Roy has to figure out who he is now that he's a vampire. Another could be isolation, as he may feel different from his human friends and allies.
Yes, there are some. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'DC Roy Harper is a vampire' and you'll likely find a variety of stories with different takes on the concept.
Another possibility is a new villain who has emerged and sees Roy and Dick as symbols of the superhero establishment that he wants to undermine. This new villain could be someone with a grudge against the way heroes operate in general and thinks that by kidnapping them, he can make a statement.