People liked old GoT, though? I don't think a lot of people liked S7 all that much, which is when the writers really started pushing the trend of killing off characters they didn't know what to do with (Littlefinger, the Tarly's, the Dornish and what was left of the Tyrell's). I mean, you're not gonna tell me that people actually like the Dorne plot, right? Also, keep in mind that Martin isn't really writing for the show at this point, which is probably why it went downhill so much. The only thing the showrunners were told was how it would end, AFAIK. Just to be clear, I know this trend started before S7, I just feel like they wanted to wrap up as many storylines as possible in S7, which they did by just killing off all characters involved in said storylines.
So if this is what Blizzard is taking away rom GoT, they kinda lost the plot. What's next, a Dark Souls game where all they focus on is making a hard game while ignoring the things that actually made the game good? Ugh...