I'm going to now throw out a string of "minor" annoyances that bugged me this episode, they aren't deal breakers but each one made me cringe:
-"Incest is cool in Dorne." WTF?
-Mycella threat was not a Cercei plot.
-I'd add sending Trystane to KL but we don't know Doran's plan so I'll let it slide for now.
-Arya lack of subterfuge.
-Meryn Trant is a pedophile. After all why else would Arya want to kill him? We've got to make it super justified.
-Face Tyrell, he's a damn joke at this point.
-Stannis has no idea what the Dance of the Dragons was, he's just a high-born lord who never paid attention during history lesson. Yes, I get we need to explain it to the audience that doesn't excuse turning Stannis into an idiot for a moment. You could have had it explained to Flea Bottom raised Davos, although even he probably knows the gist of it.
-Harpy optical camouflage.
-Harpy accuracy and combat prowess.
-Harpies storming the Pit in general, wasn't the Hizdahr marriage and opening of the Pits supposed to stop this?
-Unsullied weaklings.
-Dany just abandoning everyone like Tyrion and Missandei as the fighting initially broke out.
And that's all I can remember off the top of my head.