I found that I had correctly divined the factor which was driving the plot in the latter third of the series.
The series kept top-notch production values and writing throughout. The reason I knew what was going on--and why--is because the writing was so good; the story was character-driven and I knew why things had to be the way they would turn out being, well in advance of the final revelation of it all.
CCS is magnificently good stuff. Highly recommended.