In some 'Madara Uchiha Reincarnated Fanfiction', a really cool concept could be that his reincarnation is part of a grander prophecy. His new life could be intertwined with the fate of the entire ninja world in a more complex way than before. He might face moral dilemmas that are different from his past self, as the world around him has changed. His reincarnation could also lead to a re - evaluation of his goals and ambitions. Maybe he'll strive for peace this time instead of power, or he could find a new way to achieve power that doesn't involve as much destruction as before.
Often, Naruto might be paired with Madara in some sense. Their opposing views on power and peace could create interesting interactions in the fanfiction.
One interesting concept could be the idea of having knowledge from our world and using it in the Marvel universe. For example, knowing the future events of certain storylines and trying to change or manipulate them for the better. Another concept might be the unique powers the reincarnated character could gain, like a combination of powers that don't exist in the original Marvel canon.
One idea could be an OC who is a time - traveler and meets Uchiha Madara in his prime. The OC could have knowledge of future events and try to change the course of history, leading to many power struggles and moral dilemmas.
Another interesting concept is the idea of Madara's eyes having a sentient will of their own. In the fanfiction, the eyes could influence the character who possesses them, sometimes for good and sometimes for bad. It would create an internal struggle within the character as they try to maintain their own will while also dealing with the desires of Madara's eyes.
One interesting concept could be how Madara's reincarnation might change the power dynamics in the Naruto universe. For example, if he is reincarnated with some of his past memories intact, he could use that knowledge to his advantage in new and unexpected ways.
One interesting concept could be Obito crossing over into a modern - day world. He'd be this powerful ninja out of place, dealing with things like technology and modern society norms. It would create a lot of comical and also some really thought - provoking situations as he tries to adapt.
Some fanfictions play with the concept of reincarnation and magic. A character might be reincarnated with some sort of magical ability they didn't have before. This could be related to the old gods or the new. For instance, a character reincarnated with the ability to communicate with the weirwoods in a more powerful way than before. This could give them an edge in the game of thrones, as they could gain knowledge and wisdom from the ancient trees that others can't access.
One interesting concept could be how the original character's skills or personality traits from their previous life affect their new life in the Naruto world. For example, if the OC was a great strategist before, they might use those skills to outwit opponents in ninja battles. Another concept could be the relationships they form. Maybe they befriend characters that were overlooked in the original Naruto story, adding new dynamics to the plot.
One interesting concept is the idea of a gamer being reincarnated into a multiverse. This allows for a vast range of settings and adventures. For example, they could be in a fantasy world full of magic and mythical creatures, where their gaming skills can be put to use in combat or exploration. Another concept is the ability to gain unique powers or abilities in different universes, which can lead to some really cool character development.
One interesting concept could be the character's knowledge from their previous life affecting their actions in the House of the Dragon world. For example, they might use modern strategic thinking to navigate the complex political situations in the story.