You could also do a crossover plot. If 'a new dawn' has a unique world, introduce characters from another similar - themed work into it. This would bring new dynamics as the different characters with their own motives and abilities interact with the existing ones in the 'a new dawn' world.
One idea could be exploring a character's backstory that was not fully developed in the original. For example, if there's a side character in 'a new dawn', the fanfiction could delve deep into their past, like their family life or how they came to be in the setting of the story.
In this fanfiction, a really interesting plot might be the emergence of a powerful energy source near a stargate. This energy source attracts various factions, both friendly and hostile. The main characters then have to protect it from falling into the wrong hands, while also trying to understand its true nature. They might face internal conflicts within their own group as different members have different ideas on how to handle this new discovery. And there could be a race against time as the hostile forces are getting closer and closer to seizing the energy source.
Perhaps a plot where an old enemy resurfaces in a new form, and the new generation has to figure out their weaknesses. This could lead to intense battles and character development as they struggle to adapt to this new threat.
One idea could be exploring the backstory of a minor character in A New Dawn. For example, a young mechanic who ends up helping the main characters in a crucial way. Another could be a story set in a different part of the galaxy during the events of A New Dawn, showing how those events are affecting other worlds. Maybe a planet is facing a food shortage because of trade disruptions caused by the main conflict.
In 'Dawn of Darkness Fanfiction', a cool plot could be a time - travel plot. A character accidentally travels back in time to a crucial moment in the history of the 'Dawn of Darkness' world. They then have to figure out how to get back to their own time while also making sure they don't accidentally change the future for the worse. Another idea is a story that focuses on the magic system in the 'Dawn of Darkness' world. Maybe a character discovers a new way to use magic that was previously thought impossible and has to deal with the consequences, both good and bad.
You could also create an alternate timeline for the 'a new dawn' story. Maybe in this new timeline, a key decision was made differently, and it completely changes the course of events. This would allow for a lot of creative freedom in exploring new relationships and plot developments.
An OC with a special power related to nature could join Yona's journey. For example, the OC can communicate with animals and help the group in various situations like finding hidden paths or warning about approaching danger. This would add an interesting dynamic to the group as they face different challenges. The OC could also have a backstory about how they discovered their power and why they decided to use it to help others.
One plot idea could be that Cynthia and Dawn team up to explore a new and mysterious region in the Pokemon world. They encounter a rare and powerful Pokemon that no one has ever seen before. Along the way, they face challenges from a new villainous team who wants to capture this Pokemon for their own evil purposes.
One idea could be that Dawn discovers a rare and powerful Pokemon that no one has ever seen before. This Pokemon could have unique abilities that help Dawn in her journey, like being able to communicate with other Pokemon in a special way. Another plot could involve Dawn getting lost in an unknown region filled with new types of Pokemon and having to find her way back while making new friends along the way. She could also face a group of villains who are trying to steal Pokemon for their evil plans, and Dawn has to stop them.
A great plot for Until Dawn crossover fanfiction might be a crossover with the Final Fantasy series. The Until Dawn characters could be transported into the world of Gaia or some other Final Fantasy world. They would have to adapt to the magic and the different races there. They could go on quests, fight monsters, and maybe even meet some of the iconic Final Fantasy characters like Cloud or Tifa. Another idea is a crossover with the Silent Hill series. The Until Dawn group would find themselves in the fog - filled, nightmarish town of Silent Hill. They would have to face their inner demons as well as the grotesque creatures that lurk in the town. And they could also cross over with a detective - themed show like Sherlock. The Until Dawn characters would be involved in solving mysteries in Victorian London, with Sherlock and Watson helping them out.
Perhaps in the fanfiction, Dawn and Paul get married and then are chosen to represent a new Pokémon league. They have to train even harder and also deal with the pressures of being in the public eye as a married couple. This could involve them having to make sacrifices in their personal time and deal with jealous rivals who try to undermine their relationship.