A really interesting plot for fleabag and the priest fanfiction could be set in an alternate universe. In this universe, Fleabag is also involved in the church in some way. They meet in a completely different context, like during a church - run community project. Their relationship develops as they work together towards a common goal, but they still face the same internal and external struggles as in the original story. This would give a fresh perspective on their relationship and how their personalities interact in a different setting.
One idea could be exploring what happens after the end of the series. Maybe Fleabag and the priest try to find a way to balance their relationship with his religious duties. Another could be a flashback to the priest's life before meeting Fleabag and how it shaped him into the person he is now.
One common theme is the exploration of forbidden love. Since the priest is, well, a priest, the fanfiction often delves into the challenges and emotions that come with loving someone you're not supposed to be with in a religious context.
There is a particular Fleabag Priest fanfiction that I remember which beautifully captures the essence of their connection. It shows how their interactions are not just about physical attraction but also about two broken souls finding solace in each other. You can start by looking at popular fanfiction communities dedicated to the show to discover more such gems.
One idea could be exploring the Grand Priest's past. Maybe he had a different role in the universe long ago. Another could be a story where the Grand Priest has to make a difficult decision that goes against the will of the Omni - King. Or perhaps a story where the Grand Priest trains a new character to become a powerful being in the Dragon Ball universe.
Another idea is that Black Hat, being his devious self, tries to corrupt the Priest by using Lucy as bait. He knows the Priest has a soft spot for saving lost souls like Lucy. This could lead to a moral struggle for the Priest between his duty and his growing feelings for Lucy, who is in danger of being turned to the dark side.
First, understand the characters well. Know Fleabag's complex personality and the priest's internal conflict. Then, create a believable situation for them to interact. Keep their dialogues in line with their characters from the show. For example, Fleabag's sarcastic and self - aware remarks, and the priest's spiritual yet conflicted statements.
One idea could be exploring the unspoken stories of the ranch hands. Maybe there's a hidden love affair between two of them that has to be kept secret due to the social norms of 1923. Another could be focusing on how a young character dreams of leaving the ranch and going to the big city, but faces many obstacles. And a third idea could be a mystery plot where strange things start happening on the ranch and the characters have to figure out what's going on.
One idea could be Android 21's struggle to fit into a world that fears her. She has to prove that she's not a threat and tries to make friends. Another could be her discovery of new powers and how she uses them for good. Maybe she teams up with other characters to fight a common enemy.
One idea could be Vampirina making new friends in the human world who are initially scared but then come to understand her. For example, she could join a school club and have to prove that she's not a threat.
Another plot could involve a crossover within the Darksiders universe. Maybe the Horsemen have to team up with a previously unknown group of characters to face a new, greater threat. This could introduce new dynamics and relationships.
Another plot could be a different version of Vision's 'rebirth' in the show. What if there were more glitches and he had to figure out his identity in a completely different way? This could lead to some really cool interactions with Wanda and the other characters.