Here's my synopsis of "The Man in the High Castle" thus far. (No spoilers.)
Season 1 - Soundly based on a story by a popular novelist. Opened up a multiverse of possibilities.
Season 2 - Holy shit, we got renewed and there's no more of the novel left. What should we do?
Season 3 - Let's milk this and take an entire season to move the plot forward to what should have taken 2 episodes to accomplish.
Time = wasted.
!TV series point