One idea could be a story about a Dark Eldar wych who is trying to rise in the ranks within her cult. She could face challenges from rival wychs and have to prove her worth in the gladiatorial arenas of Commorragh.
Jeff Bezos founded Amazon. His unique idea was to create an online marketplace that could sell a vast range of products. At first, it was mainly books, but he had the vision to expand it into a global e - commerce giant selling everything from electronics to groceries. This idea revolutionized shopping, making it more convenient for consumers around the world.
Innovation is a key element. For example, Apple's business ideas are often centered around innovative technology and design, like the iPhone. Another element is identifying a market need. Uber saw the need for convenient transportation and filled it. Also, effective marketing is crucial. For instance, Red Bull's extreme sports marketing helped make their energy drink very popular.
One idea could be that K has some unique jutsu that Naruto wants to learn. So he teams up with K to go on a journey to master this new type of jutsu. This could lead to a lot of fun interactions as Naruto's energetic and determined personality clashes and also meshes with K's own characteristics.
One idea could be a crossover with Star Wars. Imagine the Imperium of Man encountering the Galactic Empire. The two totalitarian regimes could have some intense ideological battles and epic space battles as well.
One interesting idea could be the combination of Naruto's ninja abilities with the high - tech and grimdark elements of Warhammer 40k. For example, Naruto's shadow clone jutsu might be used in a unique way on the battlefields of the 41st millennium. Maybe the clones could be used to infiltrate enemy lines or to overwhelm ork mobs.
One idea could be inserting yourself as a new recruit in a Space Marine chapter. You could experience the brutal training and the strict code of honor. Another is to be a tech - priest, exploring the complex machinery and the religious aspects tied to it. Maybe even be a rogue trader, traveling the galaxy in search of profit and adventure.
One idea could be a vampire Space Marine. Maybe a genetic experiment gone wrong in the Imperium that results in a Marine with vampiric traits. He has to struggle with his newfound thirst while still trying to fulfill his duty to the Emperor.
A fanfiction could explore 10k's backstory more in - depth. Maybe he had a family before the apocalypse that he is constantly reminded of during his travels. This could add a whole new emotional layer to his character.
Another interesting concept is to have a Primarch face a completely new enemy. Not the usual chaos forces or xenos, but something from within the Imperium itself that has turned against it. This would create a lot of internal conflict and moral dilemmas for the Primarch to deal with.