"Blake's 7" is actually a very good show, but it does suffer, like classic Doctor Who, from budgetary limitations. The design work is, like in classic Doctor Who, often excellent, and there are lots of good actors. What makes it interesting is that there are no heroes in the story, just opposing forces. The protagonists are a band of criminals who gang together because they have a common enemy, an even more evil galactic empire. Our "heroes" often do morally questionable acts, and frequently get killed off very unceremoniously. In other words, the stuff "Game of Thrones" is being hailed for as original and groundbreaking storytelling was already done in "Blake's 7". And, more to the point, in Michael Moorcock's fantasy books.