Are we really getting a Dps parsing dummy?

[Fendred]

DD checks are needed though otherwise people will just run harder content with tanks and healers only.

Actually, DD is still useful in such cases because a group doesn't want to cycle too many times through the boss mechanics. The more prolonged a fight, the higher the chance of a wipe at the hands of instant death mechanics or mechanics that are practically instant death. If a group of people finish it with tanks and healers only, power to them. It means there would be more than one way to cook an egg, which can only make the game richer, not poorer.