I think when I did it, it was with a Paladin on a hard dungeon. I agree though that it could/should be changed.
Paladin probably has it worst here:
25% (class) + 18% (dragon shield) + 15% (blood shield) = 58%. You're pretty much at the cap already, so even a single
level of blood hunger is lowering your max resists. This is not a good tradeoff at all, even if it does pay for its own piety cost.
Seeing as it junks your resistances, it really only combos with DR from the EM.
Yeah, but she hates
lifesteal so you'd need to start with Earthmother then convert to Dracul, so you'd only be picking up Blood Hunger in the end-game after you've already cleared out most of the monsters. So it really isn't relevant anyways...