This is all pretty awesome, folks. I'm going to have to figure out how to handle Radvir's lair, which the party may reach next session.
One question: Rakshaka, how is it that a dominated party can be made to fight the PCs without the dominated party getting new saving throws to throw off the domination (and, presumably, then turning against the vampires). It seems like domination isn't a very good way to get people to fight on your behalf unless they would already be inclined to do so.
From the PRD: "Subjects resist this control, and any subject forced to take actions against its nature receives a new saving throw with a +2 bonus."
Am I missing something? This is definitely something my PCs would call me on (which is meta-gaming, but, you know, still...).