Still, Queen of the Damned was good for eye-candy, without much of a message, and I don't think it attempted to be much more than that. So what if the characters had faint flashes of greater complexity than presented on the screen? Read the books.
I did, however, notice the hints of Tale of the Body Thief as a sequel. I have to go re-purchase the novels to re-read them. All of my Anne Rice books were lent to a friend of my ex-wife's, a man who went by the alias ^*^vampire^*^ on the BBSes, and I never got them back.