The emotional beat that got me most was Tyrion saying goodbye to Jaime. And much as I hated the Jaime arc last week I think someone deciding that they needed to be with the person who they had spent their life with, who they had had three kids with are were expecting a fourth, even if they are an awful person, make sense, it just could have been written much better.
I thought the technique of showing it from Arya's viewpoint really worked. GRRM has always been about subverting tropes, right? Well, this is what it looks like, from most ordinary people's point of view, when our 'hero' conquers the city with a dragon. This is what violence is always like for most of the poor fuckers caught up in it.
This is what happens when the Big Bad finally meets their end. Cersei was never a cartoon evil baddie. She was cruel, she was vengeful, she was toxic, and she also knew you win or you die and she always wanted to win for her children.