What are some interesting plot ideas for Final Fantasy OC fanfiction?

Maybe an OC who is a former Shinra scientist but turned against them. They have knowledge of secret projects that tie into the events of Crisis Core. They team up with Zack to expose Shinra's wrongdoings, adding a new layer of mystery to the story.

One idea could be exploring the backstories of the minor characters in more depth. For example, the story of the civilians in Cocoon who were affected by the events. Another could be a what - if scenario, like what if Lightning had made different choices at certain key moments. And a third could be focusing on the relationship between Fang and Vanille before they became l'Cie.

One idea could be creating an OC who is a skilled mechanic from a far - off planet. They could join the crew of the Galaxy One and use their unique mechanical skills to fix and upgrade the ship in ways that the others can't. Maybe they have a special tool that was passed down in their family for generations.

One idea could be exploring the backstories of the minor characters. For example, the SeeD trainees who don't get much spotlight in the game. Another could be a 'what if' scenario, like what if Squall and Rinoa didn't end up together? It could also be interesting to write about the world of Final Fantasy 8 from the perspective of an ordinary citizen living in one of the cities, dealing with the sorceress wars and the chaos that ensues.

One idea could be a crossover with another popular RPG like Dragon Quest. The characters from World of Final Fantasy could end up in the world of Dragon Quest, facing new enemies and having to adapt to different magic systems. For example, the mirages in World of Final Fantasy might interact in strange ways with the slimes in Dragon Quest.

One idea could be a male self - insert who has the power to control time. He uses this power to prevent certain tragic events in the Final Fantasy 7 world, like the destruction of Aerith. Another plot could involve the male SI being a master of a new type of materia that no one has seen before, which attracts the attention of both Shinra and Avalanche. He has to decide which side to ally with or if he should remain neutral.

One idea could be a story where Hope and Lightning are stranded in a mysterious realm within the Final Fantasy XIII universe. They have to rely on each other's skills to survive and find their way back. For example, Lightning's combat expertise and Hope's strategic thinking could combine to overcome the strange creatures they encounter.

Maybe the Philosopher's Stone in Harry Potter has some connection to a powerful crystal in Final Fantasy. Voldemort wants to use it to gain ultimate power, and the heroes from both universes have to come together to protect it. For example, Cloud Strife could join forces with Harry and his friends. The Hogwarts houses could be compared to the different classes in Final Fantasy, like Gryffindor being similar to the Warriors in Final Fantasy.

Well, a really cool plot could be that the Mass Effect Relay network somehow gets connected to the Crystal Materia in Final Fantasy. This causes chaos as both universes start to blend. Characters from both sides have to figure out how to separate the two worlds again. Along the way, they discover that there are ancient forces at work in both universes that are related. Tali could use her engineering skills to help repair some of the damaged Crystal Materia, while Squall could teach her some sword - fighting techniques from his Gunblade.

One idea could be a crossover with the 'Harry Potter' universe. Squall could be a wizard, and his gunblade could be enchanted. Another could be a crossover with 'Star Wars', where the characters from Final Fantasy 8 are in the middle of the galactic conflict. Maybe Laguna could be a Jedi - like figure.