Tyrion and Sansa are married and part of/leaders of a democratic council of various houses.
With fire magic and ice magic gone for good, there's no need for Bran to be three eyed raven anymore.
Arya is either dead or escapes to Storms End to be with Gendry, after killing/not killing Cersei.
Jamie and Brienne die separately/together, after killing/not killing Cersei.
Dany dies and her dragon lives/dies, after getting rid of Euron & Kings landing.
Jon dies/retires to the north, after killing Dany.