Okay, finished Season 6 last night.
The production is brilliant, the fighting scenes are so powerful they put you right there under the fallen horses and covered in blood and guts. A real battlefield. GOT is gripping and it has managed to sustain itself on all fronts through 6 Seasons that I've watched.
It is controversial, deeply critical of certain historical events and ideological manifestations which are dissolved in the symbolism of events in the narrative and it pushes the envelope of what is and what is not the norm, placing what is not the norm against the evil machinations of contenders for belief in order to enforce an equally unacceptable norm. It's also a game of norms.