You could also focus on the relationships in the story. For example, develop a romantic sub - plot between two characters who were just friends in the original. Or, explore the family dynamics of a character. What if a character's long - lost relative shows up in the west of here? This could add a whole new layer of drama and intrigue to the fan fiction.
One idea could be to explore the backstories of the minor characters in 'west of here'. Maybe a character who was only briefly mentioned in the original has a whole life full of adventure before they came to the west of here. Another could be to create an alternate ending where the main conflict is resolved in a completely different way, like through negotiation instead of a big showdown.
One idea could be to explore the backstories of the characters in more detail. Maybe there are hidden pasts that are slowly revealed as the story progresses.
Maybe in the fan fiction, Chanel and Rob find themselves in a time - travel situation. They end up in the early days of skateboarding and have to use their modern knowledge to influence the development of the sport while also dealing with the cultural differences of that era. This could lead to some really fun and educational moments as well as some great character development.
One idea could be a story where the Mandalorian has to team up with an old enemy to fight a new, greater threat. Maybe a powerful Sith Lord emerges and they have to put aside their differences.
One idea could be exploring a different origin for Toothless. Maybe he was part of an ancient dragon tribe that was thought to be extinct. Another could be a story where Hiccup discovers a new dragon species that has unique abilities and forms an alliance with them. A third idea is a time - travel fan fiction where Hiccup goes back in time to prevent a great dragon war from ever starting.
A great plot for Warframe fan fiction could be a Tenno getting trapped in a parallel dimension where the rules of the Origin System are all messed up. They have to find a way back while dealing with strange versions of familiar enemies. Or perhaps a story about a Tenno who discovers a hidden Orokin vault that contains not only powerful weapons but also a secret that could change the balance of power in the Origin System. Also, a plot about a Tenno's struggle to control a newly acquired and extremely powerful Warframe that has a mind of its own could be really engaging.
Well, you could have a survivor fan fiction where a contestant has a hidden skill, like being able to communicate with animals on the island. This could give them an edge in finding food and avoiding danger. Or perhaps a story where there's a traitor within the group, someone who is secretly working with the show's producers to create more drama. Also, a plot where the survivors find a map that leads to a hidden part of the island with a bountiful supply of food and shelter.
One idea could be that the Ghostbusters discover a new type of ghost that can possess technology. So they have to find a way to stop it from taking over all the electronics in the city. It would be a race against time as the city starts to descend into chaos with machines going haywire.
One idea could be a story where a minor character from the game gets a chance to become a hero. For example, a low - level soldier who discovers a hidden power within himself and uses it to save his comrades during a crucial battle.
One interesting plot idea could be exploring what would happen if Aladdin's three wishes had unforeseen consequences that affected not just him but the whole city. For example, a wish for wealth might lead to an economic imbalance.
One idea could be Yzma getting a chance to redeem herself. Maybe she accidentally discovers a new magic that can reverse all the bad things she's done in the past and she has to decide whether to use it for good or for her own gain.