My fanfic ending is much dumber.
1) They agree to hold Cleganebowl to decide who holds the 7 kingdoms. The hype is more important than everything.
2) The night king agrees for a truce so that he may travel down south and watch the fight.
3) The fight is fucking rad.
4) Another episode is spent on the rad fight, but the Hound wins in a really metal way by literally using Oberyn's flaming bones to kill the Mountain.
5) As the Night King prepares to leave KL, Arya assassinates him, violating guest right but ending the war. Dany, trying to follow Westerosi customs to be more popular, has her executed for it because that's apparently not rad.
6) Jon executes Dany. Tyrion dies at some point. Bran says cryptic shit. Jon renames the 7 kingdoms to "The North" and thus remains King in the North, but actually ruling over the 7. Oh and Dany becomes the future Night Queen for a thousand years from now due to no actual reason but like sequel hooks man.