Another good chapter, and of course a swift and justifiably harsh set of penalties for the lawless.
I like how you have Snape playing the game here, almost as if he never wants to fully commit to either side, while he secretly hopes Harry and Voldemort both die while leaving the pureblood side no more crippled in the process.
It keeps him striving to be more neutral in his dealings, unlike in canon where it was a ridiculous set of circumstances that kept him around.
You actually get the sense that he is a very talented spy in this story albeit, still a very unsavory and borderline evil sort.
Snog buddies with Luna, eh? Well as long as everyone else and her sister joins in a la Reordered that should be a sustainable relationship without having to provide excessive detail that takes away from the plot.
At any rate, its your story and I am enjoying it quite a bit so far so keep up the good work.
Thanks for writing,
Matt