[WraithLord]

I also usually set my blood hunter to retreat. However this makes them susceptible to assassination, so just take this into account.

Also, vampires as blood hunters, I assume you mean vampire lords (or whatever their name). Aren't they more useful auto-summoning, or fighting or casting spells. Besides, they come into play mid to end game, by then you either have an established blood economy or you'll probably never have one.

One last Q though, what if I want to use the Hinom priests as blood hunters (IIRC they are names "Kohen" with 1B). Are they going to eat the population like Rephaim and Baal?