Yeah. Those original vids were based on 5 blood DKs each with blood aura stacking for healing. Can't remember off the top of my head, but was that about 20% healing to entire group of dmg done as well as 5 x blood tap heal which healed the main char for 20% health and each party member for 10% every 30 seconds. The second part you can still achieve, but the removal of the blood/frost/unholy aura basically killed the insane amounts of damage based healing that made the whole thing viable.