1. The show is now flipping events. As we all know, the snow castle/moon door scene is the final chapter in ASOS. Biter and Rorge attack Brienne, and Hound is injured in the bar fight. They've essentially made it more fun to watch because while events are shuffled and changed, the same result actually happens (see: Hound is now injured, for example.)
2. That's what Hot Pie was for. He doesn't show up in the books after they leave him at the inn. But guess what, the show uses adaptation in a smart and creative way to fix problems the books had. One major issue with AFFC was Brienne's quest. It sucked. It was meandering and shit. Having Hot Pie point her in the direction and cut on bloat in just one scene is genius. Fuck Biter and Rorge.
3. They have actually shown that they have the capacity to IMPROVE AFFC and DWD now by taking these steps.