I like very much how they, in my opinion, brought back the principal xenos from 40k universe in this book. I was tired of these mainstream xenos (as much as I was tired of mainstream daemons) but now, they brought them back with a colour that pleases me. Maybe that's just me also and the fact of reading about them again helped me like them much again, but hey, that was my feeling about it.
I would like an Askellon bestiary.