[Benly]

While I have pretty limited experience, I feel like even increasing them to B2 would have a significant effect on their dynamic. A major feature of the SDR as it stands is that whatever crappy B1 bloodhunters you churn out can manufacture their own SDRs, so there's pretty much no reason ever to be hunting at B1 except to get the first five slaves. B2 or the suggested B3 would make them an investment of actual mage turns - still worth cranking out, but no longer an entirely automatic self-upgrade for your entire bloodhunt armada.