If they stay true to the books and have a legit budget it could be better than GOT... Should have cast someone a little bit bigger / more muscular to play Lan though.
I haven't read this series yet mainly because I'm on my 3rd round of reading The Malazan Empire books. They are fantastic, but written on a scale that is so huge it takes multiple readings just to understand major plots. I had not heard of this until now, but I'm excited!