I wish they would've had Tyrion say "I'm feeling more innocent by the second" when Oberyn seems 100% sure to win. I'm not sure if thats exactly what he says in the books but it's something like that.
I was sad to see the Hound and Arya at the Bloody Gate. I was hoping it would be important WHERE Arya leaves him. It seemed to me like a lot of the time in this one was wasted.