Arya's storyline this season has been SO disappointing. And I totally agree with your criticism of Jaqen just letting her go. What was the point of all that "a girl has no name" non-sense?
One of my favourite things about this episode though was Tyrion's drinking session and Missandei laughing.
Also, fuck Cersei! I just loved how Tommencat outlawed trial by combat. Muahaha BURRRRRRRRRN, bitch! Burn in wildfire!