Another concept might be that the Ewoks don't help the Rebels on Endor. Without their assistance, the battle could have a very different outcome. The Death Star might not be destroyed, and the Empire could maintain its stronghold, leading to a much darker and more oppressed galaxy for the non - Imperial species.
Perhaps in an alternate ending, Princess Leia could have become a Sith Lord. Given her strong connection to the Force and her feisty personality, if she had been swayed by the dark side, she would have been a formidable adversary. She could have used her political influence and Force powers to create a new Sith - led regime, changing the course of the entire Star Wars saga.
One interesting concept could be alternate endings for major battles. For example, what if the Rebels lost at Endor? It would completely change the galaxy's power structure. Another concept might be different character backstories. Maybe Darth Vader had a different master before Palpatine. And there could also be fanfictions exploring an alternate universe where the Jedi and Sith have different rules or abilities.
Another interesting fanfiction could be an alternate Star Trek where the Borg are not the menacing force they are in the original. Maybe they are a more peaceful, misunderstood species that the crew of the Enterprise has to help protect from other threats in the galaxy.
One idea could be exploring the backstory of a minor character in Star Wars 1. For example, a young Padawan who was on the same Jedi training grounds as Anakin but had a very different path. Another could be a fanfiction that focuses on the political intrigue on Naboo before the Trade Federation blockade. Maybe there were some secret meetings or power plays that we didn't see in the movie. A third idea is to write a story from the perspective of a droid during the events of Star Wars 1, like how they experienced the chaos and battles.
In some twilight alternate ending fanfiction, Jacob might end up with Bella. This could happen if Edward decides to leave for good, perhaps to protect Bella from the vampire world in a different way. Jacob, being the ever - present protector, steps in and Bella realizes she has deeper feelings for him.
One idea could be that Luke Skywalker manages to fully redeem Kylo Ren without having to sacrifice himself. He could use his new - found knowledge of the Force to heal the rift in Kylo's soul, and together they could bring a new era of peace to the galaxy. This would show the power of redemption and forgiveness in the Star Wars universe.
Another plot could be a different take on the fall of Anakin Skywalker. Instead of Palpatine's manipulation being the sole factor, there could be an ancient Sith artifact that influenced him. This would add a new layer of mystery and a different origin for his turn to the dark side.
Another idea is that Arya Stark decides to explore the world beyond Westeros. She discovers new lands and cultures, and then returns to Westeros to share her knowledge. This changes the way the people of Westeros view the world outside their own continent, leading to a more open - minded society.
Another idea could be that all the snapped heroes come back with new powers. This would create a whole new set of challenges for the Avengers as they try to integrate these newly powered heroes into their fight against Thanos. It would also make for some really exciting battle scenes.
One interesting idea could be that Harry decides not to destroy the Horcruxes but instead finds a way to redeem Voldemort. Maybe he discovers some long - lost magic that can purify the dark parts of Voldemort's soul. Another idea might be that Hermione becomes the true hero who finally defeats Voldemort with her vast knowledge of magic and out - of - the - box thinking. And there could also be a scenario where Ron sacrifices himself in a completely unexpected way to save Harry and the wizarding world, leading to a bittersweet ending.
In Star Wars system fanfiction, a cool concept is to rewrite certain events with different outcomes. Like what if Anakin Skywalker didn't turn to the Dark Side? This could lead to a completely different Galactic Empire or even a more harmonious galaxy. Also, imagining new Jedi or Sith orders with their own sets of rules and philosophies can be really engaging.