Some thoughts about Vladimir
Don't get me wrong, current Vlad as we know him is one digusting guy to deal with, but reading his lore there is something that makes me think: in some kind of weird fucked up ritual his teacher goes into some kind of "blood-pool" form and Vlad absorbes him - and with that the knownldge of him and every other hemomancer before him.
But... is Vladimir a collective existence now? Or is he still an individual? Is he actually in control, or is he jst a puppet posessed by his old masters? Because if he didn't just take in their knowledge but also their personalities, it wouldn't be weird for them to surpress his original personality and use him as a vessel to reach their goals.
That would make him quite a tragic character: he's maybe just some dude with a blood-fetish, but he has voices in his head telling him to murder everything and drink their blood while following some kind of agenda - and those voices are not his imagination, but actual entities that have control over him.