[thejeff]

Well, I don't think you'd empower to B1, unless you don't have any Blood access. Why would anyone who has enough blood to summon & afford Vampire Lords need to empower someone to B1 to hunt?

The only other factor is that Vamp Lords are Blood 7. If you're not a full on Blood nation, you'll likely have Construction4 before you have Blood 7. You may also have blood, but no Blood Death combination.