Awesome episode!
1) The gold had made it to KL because it started on the journey right away while the tail end of the caravan was comprised of the crops being "force harvested" by Bronn, Randall, and Dickon. That's why there was such a large disconnect between the gold and the tail end of the army.
2) I've said it before and I'll say it again. The WWs aren't going to attack on day 1 of "Winter". They are attacking as the heaviest part of Winter sets in. This is why it "takes so long" for them to march south. They aren't in any rush because they are still waiting for the weather to get worse.
3) The Bran/Meera interaction was very telling. All that hard work and death for hardly even an acknowledgement. I think you can put to rest that theory floating around about Meera being Jon's twin sister since he'd obviously have told her by now if that were the case. Also, you'd think that if Howland Reed was important, Bran would have reacted to him being mentioned.
4) Lots of speculation about Bran potentially calling out LF, and that's perfectly understandable, but if he is unemotional about seeing his two sisters again, who is to say he would show any negative emotions towards LF, even if he did know what LF has done? It seems that Bran's only mission right now is to stop the Night King and killing LF doesn't do anything towards that end really. That being said, I do think he would sell out LF immediately if it became evident that LF was going to sabotage any plans to defeat the WWs.
5) Really well done how they slyly incorporated Jon's advice into Dany's council. Tyrion may have attended the battle, but it was clear he didn't really approve of the move, meaning either Dany came up with that battle strategy all by herself or Jon gave it to her. It certainly does have more of a "Jon flavor" in putting one's self in harms way to increase the odds of victory. Also, someone asked why the dothraki had to be there at all, and I counter that you saw what happened with Jamie lined up some archers at Drogon. They didn't hit Dany, but it forced Drogon to abandon that strafe. Keeping the troops on the ground occupied was instrumental in allowing full destruction by Drogon.
6) The Arya/Sansa reunion was done masterfully. They didn't really get along when they were younger, and they definitely didn't leave on great terms either. They both wanted to be excited, but the reality of the situation is so filled with awkwardness about their journeys since last they spoke and neither of them cared to fill in the holes. So often we expect this to be such a joyous occasion, "the Stark Family Reunion", but the reality of it is that it would be extremely awkward and weird in real life. I thought this interaction was finally one Stark Reunion that played out as close to real life as you could get.
7) Last but not least, which is more believable: Arya being stabbed multiple times, jumping into a river, and surviving? Or Jamie wearing plate-armor, missing a hand, sinking 10 feet under, and surviving? Personally, I pictured the scene of him "sinking" as more of a metaphor. He was maybe only 2-3 feet underwater, but he 'felt' like he was sinking into an abyss. But I could see how others could watch that scene and feel like it didn't make sense.