Well, I confess I was rather curious how you would attempt to pull this off when I saw you mention that you'd gotten the request, and I do say you seem to have pulled it off marvellously. I do wonder though what the Down-Right Terrifying ability does, given the lack of description. Good work, I'll add a link to this from the menacing manor page
Edit: Not too familiar with bloodlines though, so I can't say all that much on the balance of its power. Still, based on your other bloodlines I've seen, nothing strikes me as over the top.
Edit2: Also, forgot to mention, you should likely mention the rate at which they gain augments for the features they gain, since it currently is somewhat unclear.