Been having quite a bit of success with the 3 Vampire 5RR start but now I'm wondering about expansion, the 4th vamp fits in easily with the above build as the obvious second purchase after ao apothecary. After that I'm planning to buy thralls to bulk up the bench. Is a 5th or even a 6th vamp ever a good idea though? I did think a purely thrall support vamp who doesn't get activated might be handy but he'd still have to be rolling bloodlust to stand up. Having a sub might be nice on occasion but that's a lot of TV to be riding the bench.