SpuWhy was the night king moving in fucking slow motion when he was about to kill Bran?
I think this was fine. The leaders have been shown to do things at their own pace when they feel they're in control. They have emotions and get cocky. I think he was just enjoying the moment.
SpuWhy was Jorah kept alive after the Dothraki charge when he was in the front and then dies later in the episode?
The purpose for him dying was mentioned in the behind the scenes thing, the writers wanted to send him off with the death he always wanted - protecting the Queen he loved when she needed it most. As for why they put him on the front lines and immediately plucked him back out? Beats me.
SpuWhy did Dany and her dragon stay on the ground while getting swarmed by wights?
The dragon was in immediate pain and it's been shown before (in the fight arena in Meereen) that the dragons can't just immediately take flight when under fire, they have to gain some momentum first. Maybe a deer in headlights moment.
Literally everything else though, lol yeah.