Here's a question i'm curious about. What happens in your universe if a vampire bites another vampire. I don't think it will cause any mind control or anything but, usually from what i see it's either poisons because of the dead blood. Or it is incredibly intimate and pleasurable. Given that you're now focusing on the vampire path I thought might be an interesting thing to think about. You're doing well by the way. It's one of the few vampire gmaes that gets the temptation aspect right.
If a master vampire bites one that they turned or have dominance over, it can be an act of intimacy. The level of pleasure derived is dependent on how deep the relationship between the two vampires are/how devoted the master vampire made their victim. It wouldn't cause any additional mind control that the master vampire wouldn't already have over the victim. However, the vampire receiving the blood would get no sustenance from the cursed blood itself.