4 episodes is enough time to have an opinion of how a series is evolving and if it's going to be a real Blockbuster. We can all agree that it is very difficult to beat one of the greatest series of all times, and even worse if you try to do it with a prequel. Having said that, after 4 episodes we can assert that NOTHING IS HAPPENING! You can have great costumes, spectacular locations, astonishing special effects, you can even have dragons, but if you don't have a STORY, you will never convince your audience and you will have a mediocre result. A very expensive one. So I really hope the 5th episode shifts things up or HBO will have the most expensive soap opera of all times.