Changing DRK to DPS entirely?

[Kiteless]

Sorry, but that's actually a very bad point. "Let's not give a job something good because bad players won't know how to use it.
Why don't we simply remove Blood for Blood in fear that bad DPS will die because of it ?

Because unlike tanks, a DPS' job is to avoid getting hit. As a class that suffers from already having the worst mitigation of the tanks, the solution to its problems is definitely not a skill like B4B. And if that's what it takes to catch up to the level of damage output of the other tanks, there's something wrong with out kit as it is, and we shouldn't have to make that trade in the first place. We'd do better with a 5% buff to darkside than B4B.