I would also prefer a time jump.
Tyrion has a pretty daughter, who would actually be smart and has her daddy wrapped around her little finger. She knows all the stories.
Sansa is not the mother but Tyrion still reminisces her fondly. The real mother died in child birth, naturally.
North has isolated themselves from Westeros because they prosper while the rest of the land lacks everything under Bran's rule: food, education... weapons they don't really need because there are no wars.
Bran is still searching for Drogon in vain, spends most of his time wandering in his memories and his visions are all blurry. He has started training hundreds of young cripples and other outcasts to warg too, but they don't really get anywhere, they just loiter around in his palace.
The lords are too happy spending time in Bronn's brothels. Rest of the Unsullied and Dothraki keep the common people in order as they work in the fields. They were long ago promised their own lands if they work hard enough but this was long forgotten.
Sam has immersed himself in finding important documents in Citadel but can't keep track of anything. Home is packed with kids, Gilly giving birth to one every year.
Tyrion's daughter, called Cerseime after her late aunt and uncle, is the new adventurer in the story. Trying to get in contact with mysterious Queen Sansa she's only heard tales of. Hoping she'd be kind enough to help the degraded South.
Cerseime brings together all second generation characters to start a fabulous journey to Winterfell.
Something to start with...