Season 5 of Game of Thrones made for some fairly grim viewing. Meandering storylines, weird character development, a handful of scenes that just felt flat out wrong.
Season 6 has been much better in my humble opinion.
Ramsey Bolton scenes notwithstanding, season 6 has been hitting the right notes fairly consistently, to the point where the show currently feels like it's actually making progress towards some sort of ULTIMATE CONCLUSION. At this point it all feels quite exciting. I still feel as though the move away from the books forces the show to move a little too much towards 'TV tropes' style writing, almost as if the surprise that comes with being based on the books is lost. Savvy readers can now recognise and predict twists a little more astutely; at least that's what it feels like.
But still, some huge improvements here. I'm actually really loving Season 6 so far.