Vampires & DB

In another topic someone asked if I would want my players to suffer from Bloodlust, which made me think about Vampires in DB.
So after mulling it over I realised that Vampires would do great in DB.
The worst thing a Vampire could do in BB is fail his Bloodlust roll which means that he has to suck a Thrall or if he can't reach 1 feed on someone in the audience, and when that happens he gets send off the field and can only return in the next drive. Since we have no drives in DB the worst thing that would happen is that like in BB the Vamp would feed on the audience to, but in DB he can return the next turn (or the turn after that since he needs to snack).
No Magic Sponge is required to heal a Vamp who failed his Bloodlust, only a quick snack on a Thrall in the Dug Out.
And according to the rules a Thrall could never be killed of being fed upon.
The worst he could suffer is being Badly Hurt which would be no problem for the Magic Sponge.
Heck, this would mean that technically you could nearly field an all Vampire team in DB, with only 1 or 2 Thralls in your team.
So I'm guessing that if Vampires were allowed in DB they would have to be the primary race since the coach should be able to field 15 Thralls and just 1 Vampire.
The Secundary Race should be Human since, if I'm not mistaken, only Humans can become Vampires? I'm not really that familiar with Vampires in the world of Warhammer.
Anyway, Vamps should not be able to feed on their Human teammates who are unwilling, only on Thralls.
And since Vampires are also undead the Tertiary Race could only be the Undead.
What do you guys think?

The worst thing a Vampire could do in BB is fail his Bloodlust roll which means that he has to suck a Thrall or if he can't reach 1 feed on someone in the audience, and when that happens he gets send off the field and can only return in the next drive. Since we have no drives in DB the worst thing that would happen is that like in BB the Vamp would feed on the audience to, but in DB he can return the next turn (or the turn after that since he needs to snack).
No Magic Sponge is required to heal a Vamp who failed his Bloodlust, only a quick snack on a Thrall in the Dug Out.
And according to the rules a Thrall could never be killed of being fed upon.
The worst he could suffer is being Badly Hurt which would be no problem for the Magic Sponge.
Heck, this would mean that technically you could nearly field an all Vampire team in DB, with only 1 or 2 Thralls in your team.
So I'm guessing that if Vampires were allowed in DB they would have to be the primary race since the coach should be able to field 15 Thralls and just 1 Vampire.
The Secundary Race should be Human since, if I'm not mistaken, only Humans can become Vampires? I'm not really that familiar with Vampires in the world of Warhammer.
Anyway, Vamps should not be able to feed on their Human teammates who are unwilling, only on Thralls.
And since Vampires are also undead the Tertiary Race could only be the Undead.
