Perhaps a crossover with 'Harry Potter'. The orcs and other dark forces in Middle Earth could be seen as a new threat to the wizarding world. Talion, with his unique abilities, could team up with Harry Potter and his friends. They could learn from each other's magic systems. Talion could show the wizards his combat skills and the wizards could introduce him to their more complex magical spells and potions.
A great plot idea would be a crossover with 'Game of Thrones'. The political intrigue in both worlds could be merged. Maybe Talion could find himself in the middle of the power struggle between the different houses in Westeros. He could use his skills to either side with a particular house or try to stay neutral while still achieving his own goals in Middle Earth which are now somehow intertwined with the events in Westeros.
A crossover with a modern - day setting could also be really cool. Picture Talion and Celebrimbor suddenly appearing in a big city. They would have to adapt to modern technology while also dealing with an evil force that has followed them through some sort of magical portal. The contrast between their medieval - style combat skills and the high - tech environment would make for some really interesting scenarios.
Well, in Middle Earth: Shadow of War story, it's mainly about Talion's journey. He's got this unique bond with Celebrimbor. The story is full of twists and turns. There are various regions in Middle - earth that are under threat from Sauron's ever - expanding power. Talion not only has to deal with the regular orc armies but also the more powerful Nazgûl. His quest involves a lot of strategic thinking, like when he tries to turn the enemy strongholds to his side through the Nemesis System, which is a really cool feature of the game.
Fanfiction in the Middle Earth Shadow of War universe can offer unique and exciting stories. One could write about a new hero emerging in Middle - earth, perhaps a ranger from a far - flung region who discovers a hidden power that could change the fate of the war against Sauron. This new character could form alliances with both familiar faces like Aragorn and new, original characters created for the fanfic.
First, you need to decide which other universe you want to cross it with. Once you've made that choice, research both universes thoroughly. For example, if it's a crossover with 'Lord of the Rings' (since it's related to Middle Earth), know the timelines, characters, and key events of both. Then, come up with a central conflict that involves characters from both universes. It could be something like a new evil that threatens both Middle Earth and the other world.
Perhaps the Dark Knights could be on a quest to find a long - lost artifact that would give them ultimate power. Along the way, they face challenges from various Middle - earth races who oppose their goal. This could lead to epic battles and unexpected alliances. For example, they might encounter elves who are protecting the location of the artifact, and a complex power struggle ensues.
One idea could be a new character from our world being magically transported to Middle Earth and having to navigate the complex politics between different kingdoms. This character could have a special ability that is unheard of in Middle Earth and that ability could either be a great advantage or a source of trouble.
Well, a really cool plot idea would be if the OC was sent to Middle Earth and accidentally became part of a dwarf caravan. They'd have to learn the ways of the dwarves quickly and help them on their journey, perhaps to reclaim Erebor. And then there's the idea of an OC being sent to Middle Earth as a messenger from another dimension. This OC has to find Gandalf and tell him about a coming threat that even Sauron might not be aware of, which could completely change the course of events in Middle Earth.
One idea could be Bruz's backstory before he became a part of the story in the game. Maybe he had a family or a different life goal that was shattered by the events leading to the war. Another could be a 'what if' scenario where Bruz didn't turn evil and instead became a key ally in the fight against the real enemies.
Another plot could focus on an orc's rise to power within the Uruk - hai hierarchy. This orc could be different from the others, having unique skills or a different way of thinking. He has to outwit his rivals, make strategic alliances, and deal with the power - hungry captains who don't want to see him succeed.
One idea could be exploring an alternate timeline where the main characters have different allegiances. For example, Sasuke could side with Orochimaru permanently and Naruto has to find a way to bring him back without fighting. Another could be a story where the Akatsuki are actually working for a greater good that was misinterpreted, and Naruto teams up with them to fight a common enemy.