Just like the last book, the fluff so far has been outstanding.
The last (main) story is fairly awesome, although Lucius came off weirdly when he was dancing around. It was the only misstep I thought. He seems like the big bad dude and he will be in charge now....and he dances? Although the bit about his fingers gouging the walls where he danced was super creepy and I did like that.
The "birth" of the new Emissaries was awesome. My favorite was the Arcanist version, it seemed very much a representative of wild magic.
I did not understand why Zoraida thought she was going to die....she didn't.
The 10T story was a good example of how cruel that (my favorite) faction can be. However I don't agree that they are any more evil that any other faction. Especially in a world where Witchling Stalkers, Resurrectionists, and Ramos feeding people to Rasputina's pets are things.
I haven't read all of the faction stories yet...I need more time! I almost want to go slower reading them because they have been so good.