I do not know why people keep bring up Holmgang. When you look at all 4 tank ults. Hollowed Ground, Superbolide, Holmgang and Living dead. You can see Hollowed Ground is the best. It has the 10 seconds of inv with no down side to it. No healing requirements like the other three. Superbolide is a mix between Holmgang and Hollowed Ground. Just you start at 1 hp. Which between the tanks using their self healing and the healers using heals/hots over those next 10 seconds of inv. I would think it "COULD" be better then Holmgang. Not saying it is better but their is that chance. Holmgang to me is pretty bad just like living dead. 6 seconds of you sit at 1 hp. Honestly I wish tank ults where more like a super rampart. Making it so Reduces damage taken by like 60% - 80%.

Right now tank ult are ether, You can not take damage or you can die. Yet you still will eat 100% of all incoming damage. Can we have something more like. You eat the damage and then send a percent of the damage back to the boss. That honestly would fit Warriors and Dark Knights better. Warriors version can reduce more damage and deal less damage to the boss. Dark Knights would be reducing less damage and doing more to the boss.