Greyworm classic talking far to much about future plans.
Or possibly Missandei with Grey Worm having to kill the white walking Missandei.
I think the Hound will die, but signs point to Clegane bowl first.
Theon will die saving Sansa, or maybe Bran.
Arya, Sansa and Jon will survive.
Jaime will die (saving Brienne?) and Arya will use his face to kill Cercei. Brienne will write his story in the book of knights.
Tyrion will die later on in the season, after the battle at Winterfell.
I think in the next episode Varys will die, possibly Jorah. Grey Worm or Missandei but not sure which one. I think non plot essentials will mostly die, Podrick, Varys etc.
Samwell will be telling the story at the end of the season as Grand Maester Tarly.
I am hoping for Nymeria to return for the battle with her wolf pack.