How to write a TV show..
Haha, very true.
I'm actually anticipating season 4, but I too was disappointed with GoT after all the hype.. just Bold&Beautiful with blood and sex. Oh, and they kill sympathetic characters and make you hate the main ones too.
There is an actual story (the dragon queen), which starts kinda slow, but evolves to a pretty good one. The main reason I watched all 3 seasons.
However, talking about series; House MD. It is repetitive and tiresome in few seasons, but as an entirety and in comparison, it is brilliant. The series has a good ending and (slow) amazing main story about friendship, but one can actually just watch an episode here and there without knowing what happened before, and still enjoy it.