I tend to agree. I don't think they are going to get too deeply into the whole Knightking backstory. With only four episodes left I expect them to defeat the Knightking this week and vanish the white walkers & weigts once and for all allowing Bran to go north and assume his role as three eyed Raven and the children of the forest to somehow rule the beyond the wall and live in peace. End of storyline.
The focus of the final three is on the battle for the iron throne. Jon and Dany's complicated relationship, the Lannister showdown etc.
This is what I expect. Makes the most sense based on all of the back story and groundwork that has been laid over the past 8 years (and longer if you take into account when GRRM started writing).
You have to include closure between Cersei and her brothers, which doesn't work if the brothers are dead and Cersei is battling the NK.
We still have to see what happens with Bronn on the hunt for Jaime and Tyrion.
We have to have resolution of Cersei v Dani.
The Hound has to kill the Mountain, or Arya has to kill him.
IMO, the only reason they had Cersei bring 20,000 fighters across the sea is so that the battle for KL would not be anti-climatic, since Dani's side will have 1 or 2 Dragons.