What if Aang and Korra’s times had been reversed? Katara and Sokka find Korra in the iceberg instead, and rather than Katara and Aang falling in love, Sokka and Korra do? The story’s the same, with the war going on and the Avatar needing to master the elements to end it. Only like in LOK, Korra only needs to master airbending to become a realized Avatar. But like in ATLA, all the airbenders are dead. All of them. So, the main arc of the series would be Sokka, Katara, and Korra trying to find a way for Korra to master airbending without a teacher. All the while, Ozai grows closer to world domination and the banished Prince Zuko hunts the Avatar to regain his honor, and…well, you know the rest.
(A/N: I just thought this would be a really interesting idea. Don’t get me wrong, I’m a diehard supporter of Sukka, and I know this is an impossible idea because Korra and Aang switching would break the element cycle…but let’s just pretend. So, did I just create like a new ship? Haha Sokkorra ftw! ALSO, WITH NO AANG AROUND, THIS LEAVES KATARA FREE TO FALL IN LOVE WITH ZUKO. WHEEEEEEEE~<3 Hahaha oh, I amuse myself.)