Drk: worst designed class

[Seraphor]

You could have it so, if you don't have enough blood it does normal unleash, if you have enough blood it does Quietus

What if you want to use Unleash and not Quietus? What if you want to pull first and save your Quietus for when you've lost some MP?
It doesn't sound like it should be Quietus for me, just some upgraded version of Unleash that deals more damage... oh wait, that's Abyssal Drain, only the upgrade is that it can be targeted instead of being just around you.