The story is split in two and thus far spans some 30 - 40 years, where one part has been able to focus and develop the same characters and themes over that course owing to a quirk in how those characters work into the plot, while the other part has been hurriedly shuffling characters, motivations, and mysteries on and off the stage to keep pace with that same timespan.
I wager its harder for the writers to get the second partition down pat as they're still getting used to adapting a story that has to move quickly owing to the limitations of TV, but its clear they can write good material which the first partition makes clear. I think the first season will be rough for them but a second should be more promising as they should get a handle on working with a plot that spans space and time on a grander scale than Game of Thrones.
I wager its harder for the writers to get the second partition down pat as they're still getting used to adapting a story that has to move quickly owing to the limitations of TV, but its clear they can write good material which the first partition makes clear. I think the first season will be rough for them but a second should be more promising as they should get a handle on working with a plot that spans space and time on a grander scale than Game of Thrones.