What are some interesting plot ideas for 'Game of Thrones fanfiction'?

One idea could be exploring what would happen if a minor character like Gendry had been secretly trained in magic. He could use his newfound powers to unite the smallfolk against the warring nobles. Another plot could revolve around a female knight from the North who disguises herself as a man to fight in the wars, and along the way, she discovers secrets about the White Walkers that no one else knows. Or perhaps a fanfiction where Daenerys and Sansa form an alliance much earlier and together they reshape the power dynamics of Westeros.

One idea could be exploring what would happen if a minor character, like Gendry, had a more central role in the fight against the White Walkers. He could lead a group of common folk and prove that the power doesn't always lie with the nobles.

Perhaps a fanfiction where Daenerys Targaryen lands in Westeros earlier and forms an alliance with the Starks before the events of the main series. This would completely shift the political landscape and the fight for the Iron Throne. She could bring her dragons to help fight the White Walkers from the start.

One idea could be exploring what would happen if a minor character, like Gendry, became the King of Westeros. He has a claim to the throne through his Baratheon blood and his time with the Brotherhood without Banners could give him a different perspective on ruling. Another plot could involve a female character, like Brienne, leading a new order of knights that are dedicated to protecting the realm in a more democratic way. Or perhaps a story where the White Walkers and the humans form an uneasy alliance against a new, even greater threat from Essos.

One idea could be the Hound's journey after leaving King's Landing. He could encounter a group of outcasts and form an unlikely alliance to protect a small village from raiders. It would show his growth from a bitter, angry man to a more empathetic protector.

In Spartan Game of Thrones fanfiction, a possible plot is the discovery of Spartan artifacts in Westeros. A young maester finds a hidden vault with Spartan weapons and armor. He tries to understand their purpose and power. Meanwhile, a knight from a minor house gets hold of one of the Spartan swords. With it, he gains an edge in combat and becomes a key player in the power struggles, attracting the attention of the major houses and changing the course of the political and military affairs in Westeros.

One idea could be a character from a minor house rising to great power through unexpected alliances. For example, a character from House Frey who tries to redeem the family's name after the Red Wedding by allying with the Starks and helping them take back Winterfell. This would bring a new dynamic to the story as the character has to face the prejudices against their house.

Maybe a plot where a powerful noble is on his deathbed. He has lived a life full of sin and is terrified of facing The Stranger. He hires a group of mages to try and cheat death by warding off The Stranger. This sets off a battle of magic and wills, with the mages using all their knowledge against the unfathomable power of The Stranger. Meanwhile, his family members are divided on whether to support the noble's attempt or accept his fate.

Another plot could revolve around an emperor who is not from Westeros originally. Maybe he comes from a far - off land with different customs and magic. He tries to impose his own rules on Westeros while also having to deal with the resistance from the local lords. This could lead to a lot of interesting cultural clashes and power struggles within the story.

One idea could be reincarnating as a minor character, like a servant in King's Landing. You could use your modern knowledge to avoid the chaos of the city and slowly rise in power by befriending key players. Maybe you know of some herbal remedies that could save a noble from a deadly illness and gain their favor.