A more complex storyline might involve Adrianna and Gia getting caught in a love triangle with another character from 90210. They both have feelings for the same person and have to navigate their friendship while dealing with their romantic feelings.
Gia can also be a great character in fanfiction. She has a unique personality and her relationship with Adrianna can be explored in many ways. For example, her loyalty or her own ambitions can be the focus of the story, making her a very interesting character to write about.
Perhaps there's a plot where Adrianna loses her voice due to some illness or accident. Navid, being the supportive partner, helps her find ways to communicate and also helps her regain her confidence. He might even write a song for her in the process. This could show how they rely on each other during tough times and how their love endures through difficulties.
There might be a fanfiction where Adrianna and Navid start a project to help underprivileged kids in their neighborhood. In this story, they face various challenges but grow closer as they work towards a common good. It could show their strong bond and determination.
Another could be a 'what if' scenario. Like what if a certain character got injured along the way and how it would change the dynamics of the group. This could involve exploring the relationships between the characters as they deal with the unexpected situation.
One interesting storyline could be about the characters' exploration of a new, mysterious part of the Hollows. They might encounter strange creatures and have to use their unique abilities to survive.
There are fanfictions where the Warehouse 13 agents go on a mission to recover an artifact that has been lost for centuries. This artifact could hold the key to saving the world from a great danger. Another type of storyline could be about a character from the Warehouse getting trapped in an artifact - like a mirror where they are stuck in a different dimension. And then the other agents have to find a way to get them out. There are also fanfictions that deal with the internal politics of the Warehouse, with different factions vying for control over the artifacts.
One interesting storyline could be a different take on the relationship between Klaus and Caroline. Maybe in the fanfiction, they team up to face a new and powerful enemy that neither of them could defeat alone. This would bring out new sides of their characters as they learn to trust and rely on each other more.
One interesting storyline could be the exploration of alternate universes within the Underverse setting. Characters might discover new powers or forms in these different realms.
One interesting storyline could be a reimagining of Batman's first encounter with the Joker in the 1939 fanfiction context. Maybe the Joker starts as a small - time criminal and Batman has to figure out his true motives early on.
One interesting storyline could be the Darkling's redemption. Maybe he realizes the error of his ways and tries to make amends for his past actions, which would be a huge character development shift.