I've kept up with Dark Matter and Killjoys so far since they both are nice summer-time light watching. We'll see if they stay interest. Dark Matter has a solid cast.
Regarding GoT, I started watching this season but after they decided to completely make up the story, making wholesale changes to what actually happened in the books, I lost interest immediately. Perhaps I will return to it after all the books are finished (so in 20 years), but for now the HBO version is a fraud.