I love how they actually incorporate the strings into the story, and the idea of using captured slave body parts to replace upper class damaged bits (its disturbing as heck, but its a cool idea), and that they carve their children. The puppets look amazing, the world looks wonderfully dreary, and this movie isn't afraid to go to some dark places.
The story isn't awe-inspiring, but it's serviceable. Let's be honest here. The joy of this movie is the creativity of the world, how they make every day things feel everyday, just done with puppets. For beings whose mouths don't move at all, you get some decent emotion from them, and care about the characters.
And the opening scene that starts off showing the puppeteers? It almost made me wish that they would cut back to them a few more times during the movie. They were like dark gods pulling the strings.