Essentially...think of it less as blood-sucking monsters who suck people dry...and more as rich nobles with a peculiar taste for blood, who have the money or the influence to get others to give them blood. At least, that's how I thought of it.

In Doniaeth, just keep in mind that the majority of weapons are more along the lines of machine-powered stuff, seeing how the Don kiddos don't have magic or ki or whatevar.