One idea could be that Naruto is somehow transported to the Star Wars universe and becomes a Sith Inquisitor. He might use his ninja skills in unique ways within the Sith hierarchy. Another could be a crossover where the Sith Inquisitor comes to the Naruto world and has to adapt to chakra and ninjutsu.
Perhaps there is a prophecy in both universes that foretells of a being who combines the powers of Naruto's world and the Sith. A Sith Inquisitor and Naruto team up, reluctantly at first, to figure out what this prophecy means. Along the way, they face enemies from both worlds who don't want this union to happen.
Perhaps a Sith Inquisitor is sent on a mission to hunt down a Jedi who has some knowledge that could undermine the Sith order. Along the way, he starts to question the Sith teachings. He could meet some interesting characters during his hunt that make him see things differently. For example, he might encounter a group of rebels who are fighting for freedom, and this makes him wonder if the Sith way is truly right. As he gets closer to the Jedi, he has to battle his own inner demons as well as the physical threats that come his way.
One plot idea could be that the Vitiate tries to corrupt the Female Sith Inquisitor further. He might offer her power beyond her wildest dreams in exchange for her loyalty. Another idea is that the Inquisitor is on a quest to uncover Vitiate's true motives and secrets, leading to a series of dangerous encounters. Maybe she discovers a way to use Vitiate's own power against him to gain more influence within the Sith hierarchy.
One idea could be Naruto being transported to the Star Wars universe and somehow becoming a Sith Emperor. He might use his ninja skills in a new and dark way. For example, his shadow clone jutsu could be used to deceive and manipulate his enemies in the Sith world.
An interesting angle could be a time - travel fanfiction. A Sith Lord from the Star Wars universe somehow travels to the Naruto world. This Sith Lord could start causing chaos and trying to recruit followers. Naruto and his team would have to learn about the Sith's powers and weaknesses quickly in order to defeat this new and powerful enemy. They might also discover some similarities between their own world's history of power struggles and that of the Sith's.
One plot idea could be Ahsoka being tempted by the dark side by a Sith. Maybe she is lured with the promise of greater power to defeat an enemy. Another could be a Sith trying to use Ahsoka as a pawn in a larger scheme against the Jedi Order.
One great idea for a fanfiction could be that the female Sith Inquisitor and Andronikos start off as reluctant allies. Maybe she's on a mission to retrieve an ancient Sith artifact and he's just in it for the profit at first. But as they face various challenges together, like battling Jedi who also seek the artifact or surviving traps in an old Sith temple, they begin to develop a deeper understanding and respect for each other. Their relationship could be filled with witty banter and moments of tension as they both struggle with their own motives and the growing feelings between them.
Another interesting piece is 'The Female Sith Inquisitor: Redemption?' which takes a unique turn by exploring the possibility of a female sith inquisitor seeking redemption. It's a thought - provoking read as it goes against the typical perception of the Sith being irredeemable.
One idea could be to focus on a young Jedi who is lured to the dark side during the New Sith Wars. Maybe they are promised power to save a loved one. Another could be a group of Sith apprentices vying for the title of the Dark Lord's right - hand, with lots of backstabbing and power plays.
One idea could be exploring the origin of a new Sith Lord. Maybe this Sith Lord has a unique backstory that ties into an ancient Sith artifact, leading to a power struggle within the Sith ranks as others vie for this newfound source of power.
One idea could be that your self - insert character is an undercover agent sent to infiltrate the Inquisitors. They have to pretend to be loyal while secretly gathering information for the Rebellion. Another idea is that your character discovers a long - lost Sith artifact that the Inquisitors are also after, leading to a race against time and a battle of wits. Or maybe your character has a unique connection to one of the main Star Wars characters, like Darth Vader, and this connection causes all sorts of complications within the Inquisitor group.