A really interesting concept is that Thanos comes to Westeros to collect something he believes is as powerful as the Infinity Stones. Maybe he thinks that the Iron Throne has some sort of hidden power, or that the knowledge of the maesters is a valuable resource that he can use to gain more power across the multiverse.
Another concept is Thanos being a dragon rider. He could bond with one of Daenerys' dragons and use it to his advantage. He might use the dragon's power to conquer kingdoms and also use his own powers and the Infinity Stones to enhance the dragon's abilities, creating a truly unstoppable force in the Game of Thrones world.
The use of magic and supernatural elements. In Game of Thrones, we have things like the White Walkers and dragon magic. In Mortal Kombat, there are things like the Elder Gods and their magic. Fanfiction can explore how the magic from both universes could interact. Maybe the dragons in Game of Thrones could be used in Mortal Kombat - style battles, or the Elder Gods could have some influence on the events in Westeros. It opens up a whole new realm of possibilities for the story.
A unique idea could be Smaug being tamed by Bran using his warging abilities. Bran, with his connection to animals and his growing powers, might be able to reach out to Smaug's mind and form a bond. This would completely change the role Smaug plays in the 'Game of Thrones' universe.
One interesting concept is alternate endings. For example, some fanfictions might have Jon Snow actually ruling Westeros in a more peaceful way than in the original series. Another concept could be character crossovers, like if a character from another fantasy world entered the Game of Thrones universe. It adds a whole new layer of intrigue.
One unique element is the clash of different power systems. In 'Game of Thrones', power is often about land, armies, and political influence. Loki, on the other hand, has his own brand of magic and trickery. When combined in fanfics, it creates a really interesting dynamic. For example, in some fanfics, Loki uses his illusions to deceive the powerful families in Westeros.
One interesting concept could be the Houses of Westeros having their own spaceships. For example, the Starks might have a spaceship with a cold, utilitarian design, perhaps named after one of their direwolves. It could be a symbol of their strength and resilience in the new space - faring setting.
Well, in this kind of fanfiction, the reincarnation aspect might bring about the concept of characters getting a second chance at redemption. Take Jaime Lannister, for instance. If he were reincarnated, he could strive to correct his past wrongs. Also, it's interesting to think about how the reincarnation of magical beings like the Children of the Forest could impact the balance of power in the Seven Kingdoms. They could bring back long - lost magic and knowledge that had been forgotten over time.
Well, the idea of a Gravewalker in Game of Thrones fanfiction can bring in the concept of a different form of magic. It's not like the regular fire - based or blood - based magic we see in the show. This new form of magic related to the dead could potentially have a connection to the White Walkers in some fanfictions. Maybe the Gravewalker has the ability to control or at least influence the White Walkers in a way. It could also be that the Gravewalker is a key to unlocking some ancient secrets about the First Men and their relationship with death and the afterlife.
Well, a cool concept is the idea of the Dovahkiin being a sort of unknown force in the 'Game of Thrones' universe. Maybe they arrive in Westeros and are initially mistaken for a regular warrior, but then they start showing off their dragon - related powers. It could also be interesting to see how the Dovahkiin interacts with the different religions in 'Game of Thrones', like the Faith of the Seven or the Old Gods.
Another concept is that of a scientist character who tries to create new weapons or technologies using the resources available in Westeros. They might attempt to build something like a more efficient trebuchet or a new type of armor. This can introduce a new level of warfare and strategic thinking into the already complex world of 'Game of Thrones'.
One interesting concept could be a crossover with another fantasy world like Middle - earth. Imagine characters from Game of Thrones meeting hobbits or elves. Another concept might be a crossover with a historical setting, such as the Roman Empire. It would be fascinating to see how the power struggles in Westeros compare to those in ancient Rome. Also, a crossover with a superhero universe could be really cool, like if Daenerys had superpowers or Jon Snow could fly like Superman.