I dunno - some folk get too caught up in this book vs show stuff. Especially when they think it's drifting too far from the source material.
I don't really buy it. I think the quality is, on average, very, very high. Yeah sure, sometimes it's not so good but I really don't think it's down to source material drift.
Some of the best scenes, imo, from earlier seasons have had nothing to do with the source material - Tywin and Arya for instance. They never meet in the books yet their dialogue was sparkling.
Interesting the poster above picked Hardholme and BoB as great scenes as a reason to be worried about season 8. Neither have yet to occur in the books and will probably be totally different - doesn't stop them being excellent scenes on the show.
I love both mediums, and accept that a lot of the choices they make in the show are based around the limitations of the format rather than the creators taking liberties with the source. Ok, sometimes they do mess up but I can forgive it cos the whole package is pretty much the bees knees.