In 5-15 years they'll bring back the characters for a sequel series. It further devolve from LotR type stories to further X-Men silliness. Think about it.
They got a leader in a wheelchair with psychic powers surrounded by outcasts and misfits keeping the 6 kingdoms safe from trouble. Sansa certainly seems capable of pulling off a Magneto esque vibe perhaps resecuring territory or settling land and border disputes in brutal fashion. Also in the spirit of distasteful retcon comic book nonsense Sansa secretly gave Gregor his only peace of Poon Dangit before he left Winterfell to kill his brother. She now has a Prince who's big as a house with a brutal sense of Justice who can't be named Juggernaut for legal and creative reasons.
The sequel series sees siblings square off with different ideals of peace while King Bran assembles the finest warriors from Westeros with the help of the Godswood a.k.a Cerebro. While Sansa can just bring up the shit treatment Northerners got at the hands of the South, and always has the unwavering loyalty of her people ala Magneto and the BrotherHood.
Arya "Corsair" Stark sails the seas only to discover the world is round, and the other side has been burnt the fuck up by the "folllowers of Azai Azhor(?)" . She realizes home could be next, and sails back toward Westeros with her band of weirdos, and green people.
All the while the forces from beyond Essos who worshipped the Red God beleive Danerys to be a messianic figure of sorts. They now have a misguided Holy mission to continue her work of burning away the old world that was stopped by the Betrayer Jon Snow. And they caught the last dragon and have enslaved it for its evil goal. Maybe they found a way to hatch more fossil dragon eggs with the dragon's fire. Creating a sentinel like flying army of death. Can brother and sister reach peace, and gather their bands of freaks, and Northerners to restore peace??
Will Arya bring her Starjammers analogue group back from across the sea in time to chill everybody out, and reunite House Stark for one more showdown?? Jon shows up eventually with a group of Giants, and children of the forest who hid from the Wight Walkers, but decided they can no longer hide from shit. Big Red whos name I've already forgotten has fucked a giant chick, and has 10 big ass offspring. Jon Snow is obviously Wolverine.
Holy shit, Kit Harrington could play Wolverine.