I believe this now kills every “king” in the war of the five kings, plus a lot of their heirs (Shireen, Tomen, etc).
There are now some noble houses standing (Eyrie, Tully) but many others decimated and unable and unwilling to oppose Danerys when she arrives.
Add in that she has the backing of Dorne, the surviving matriarch of house Tyrell and a Queen of the Ironborn people will support because it means an end of the reaving ... and maybe or maybe not support from the North just for letting its current arrangement stand.
“I believe this now kills every “king” in the war of the five kings, plus a lot of their heirs (Shireen, Tomen, etc).”
Yes, it now becomes the war of five queens (Dorne, Highgarden, Cersei, Dany, Yara/Asha, - and maybe number 6 is Sansa) and two kings (Euron, Jon Snow).