I bet the North is going to join the Night King because as soon as he is defeated "winter is coming" would not be half as ominous as a slogan. Seriously though, the odds are stacked so much against the Lannisters that it will be three episodes until it is a Lord of the Rings-esque "kumbaya let us all unite and fight the evil dark forces together". I haven't really considered this so far because it seemed far down the line before the ridiculous pacing started, but the White Walkers seem very black and white, "evil for the sake of evil" bad guys. Very uncharacteristic for the series, I hope there is a catch, otherwise this will be dull.