So much to wrap up in 4 episodes. The way I see it going down:
Walkers defeat Winterfell easily and there are lots of name casualties. Brienne, Theon, Tormund, and Grey Worm I think die among a few other familiar (but not major) faces. I think MIssandei's interaction with the children, and the fact that Grey Worm can't give her any foreshadows that.
The rest of the survivors retreat but I'm not sure they go to KL. If there were more episodes left I could see that but there just doesn't seem to be enough time for a full on drawn out confrontation with Cersei as well. Certainly doesn't seem to be enough time for them to go somewhere else, let the Walkers take KL as well (killing Cersei), and then for Jon and Dany to circle back and defeat the Walkers after that.
Starting to think Dany's ambition is her undoing and she's about to turn dark.
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