...do we know if the existing DRK skills are going to retain the added effects? Obviously, there will be a rework in the potencies of affected skills, but I am wondering if we will retain things like the HP absorb on Abyssal Drain.

I really hope so. Bit of a derail from my topic, but it is odd to me that a class that has historically had so much lifesteal in this game has the worst self-healing of all tanks.