For Star Wars Dark Empire fanfiction, a great plot could revolve around a planet that is caught between the two powers. The inhabitants of this planet have their own unique culture and technology. They try to stay neutral but are forced to take sides when the Empire starts to use the planet's resources for their dark side experiments. You could also explore the idea of a love story between a Republic soldier and an Imperial officer who meet during a skirmish. Their relationship could be a microcosm of the larger struggle between the two sides, and they have to decide whether their love is more important than their loyalty to their respective factions.
One idea could be exploring the life of a new Jedi who emerges during the Dark Empire era. They could start as a hidden Force - sensitive on a remote planet and then get drawn into the conflict between the remnants of the Empire and the New Republic. Another plot could focus on the dark side artifacts that are being unearthed during this time and how different factions are trying to control them. Or perhaps a story about a group of smugglers who accidentally get caught in the middle of the power struggle between the Empire and the Republic and have to use their wits to survive.
A cool plot for Star Wars Dark Empire fanfiction might be to show the internal struggle within the Empire. There could be a group of Imperials who are starting to question the dark side ways of the new Emperor. They could form a secret resistance within the Empire itself. Also, you could write about a young Sith apprentice who discovers that there is more to the Force than just power and domination and decides to defect. Maybe a story where a powerful Jedi from the past is somehow brought back to life and has to deal with the changed galaxy of the Dark Empire.
One plot idea could be that the Star Wars Empire discovers the Naruto world and wants to harness the power of chakra for their own military use. They start by capturing ninjas and trying to study their chakra. Another idea is that a Naruto character, say Naruto himself, somehow gets transported to the Star Wars universe and has to learn the ways of the Force while also trying to find a way back home. He could end up getting involved in the fight between the Rebels and the Empire.
One idea could be a young Jedi who is captured by the Empire and forced to use their powers for the Empire's gain. They could be made to hunt down other Jedi in hiding. Another could be a group of smugglers who find themselves having to work for the Empire temporarily to avoid imprisonment, and in the process, they discover a dark secret about the Empire's new weapon project. Or perhaps a story about an Imperial officer who starts to question the Empire's methods after being assigned to a mission that involves excessive cruelty towards a planet's inhabitants.
A plot could involve a group of rebels from different species uniting to fight against the Infinite Empire. They could discover an ancient weapon or power that gives them an edge in the fight. This would include adventures across different planets, meeting new allies, and facing dangerous enemies along the way.
One idea could be exploring what would happen if the Empire experimented with cloning Jedi. They might try to create Jedi - like soldiers under their control.
Another idea is that the Sith Empire decides to use a new form of Sith magic during the Clone Wars. This magic starts to corrupt the planets it is used on, and the Jedi have to find a way to stop it. The story could show the different reactions of various species to this new threat. For example, some might be more susceptible to the corruption while others are more resistant. The Jedi would have to form alliances with these different species to combat the Sith Empire's new weapon. This would involve a lot of political maneuvering as well as physical battles. It could also explore the nature of the Force and how the Sith's use of it in this new way affects the balance.
One idea could be a crossover where Master Chief from Halo ends up in the Star Wars universe and has to team up with the Rebel Alliance against the Empire. He could introduce his advanced combat skills and technology to the Rebels.
One idea could be exploring the backstory of a new, powerful Sith Lord in the Dark Destiny universe. Maybe this Sith Lord was once a Jedi apprentice who fell to the dark side due to a great betrayal. Another could be focusing on a group of rebels trying to find a long - lost Jedi holocron that holds the key to defeating the dark side once and for all in this fanfiction setting. A third idea might be a story about a young Force - sensitive character who is caught between the light and dark side, being courted by both the Jedi and the Sith.
A great plot idea for a Star Wars Shadow of the Empire fanfic could be to expand on the relationship between Dash Rendar and Leia Organa. Maybe there are some untold adventures they had together that didn't make it into the official story. Another option is to explore the criminal underworld more deeply. Show how different gangs and syndicates operate during this time and how they are affected by the larger conflict between the Empire and the Rebellion. You could also create a story about a lost Jedi artifact that is discovered during the events of Shadow of the Empire and how different characters are drawn to it for different reasons, whether it's for power, knowledge, or to keep it out of the wrong hands.
One interesting plot idea could be a story where a Rebel spy infiltrates the Empire during the events of 'The Empire Strikes Back' in the style of 'Star Wars Rebels'. They could discover a new secret weapon the Empire is developing and try to sabotage it. Another could be a story about a young Jedi in hiding who gets caught up in the Rebels' fight against the Empire at this time and has to use their newfound powers to help. Or perhaps a story where a group of Rebels has to rescue one of their own who was captured by the Empire just as Vader is on the hunt for Luke.
One idea could be the Empire implementing a more democratic council system within its ranks. This would allow for different voices from various Imperial officers and regions to be heard. For example, a council made up of representatives from different star systems could advise the Emperor or high - ranking officials on policies, which might lead to a more inclusive and less tyrannical Empire.