Arya, Bran and Sansa survive, and they all reunite to ultimately rule in the north. Sansa takes down Little Finger. Stannis, in despair after sacrificing Shireen for no good purpose, becomes the 1000th Lord Commander of the Night's Watch. Brienne becomes castellan at Winterfell.
Davos finally gets to go home. The Boltons die horrible deaths that could never, ever be horrible enough. Big Walder takes over whatever is left of house Frey.
After inadvertently setting off the wildfire that destroys King's Landing, Dani fries Euron on the Isle of Faces. Previously he blew the horn of Joramon, bringing down the wall and setting off the zombie apocalypse. Then Jon gets the dragon - probably Rhaegal - that Victarion unwittingly summoned to Euron with the dragonbinder horn.
Tyrion rides Viserion to Casterly Rock for a showdown with his sibs. Jamie and Cersei go out in a murder-suicide. Then, Jon, Tyrion and Dani ride their dragons into the Land of Always Winter to defeat the Others at their home base. They win, but none of them ever return. Well, maybe Tyrion. Somebody has to relate what happened there.
Cold Hands is not Benjen.
It is known.
H/T to poorquentyn