I hopped right in and enjoyed the world, but it feels slightly less deep than the other universes. Perhaps more time (and books) in the universe will help. The open ended ending–the resolution feels much less complete in one book than Scalzi’s norm–probably affected the way it felt.
The scale, too, is different. Instead of following a normal person for the universe around, we’re in the midst of nobility and the emperor’s court.
I bet that with another read, I’ll warm to the main characters further. Similarly, I like the interdependency as a universe; it feels like a screwed up world that we could easily stumble into.