I felt like we were short changed on the Frey plot. In the books it's a whole big thing, with Tom o' Sevens smuggling himself into a Frey-infested Riverrun: convenient for the Brotherhood and Lady Stoneheart, if they wanted to pay a gristly visit to everyone's favorite shit weasels. They hacked out so many parts of the books, the Mummer's Dragon (Little Griff), Lady Stoneheart, the Mad Mouse, practically every scene with Randal Tarly, Penny, and Val the wildling "princess". The results are hit-or-miss in terms of entertainment. After a while you have to wonder if the show runners loved the books so much they deliberately sabotaged the series; because they killed Barristan, gutting the siege of Meereen, and they killed Stannis, gutting the Battle for Winterfell.