PLD main here, wouldn't give two f**ks about losing a bit of damage if at least Dark Knight got something like oGCD Grit and a 10-15% damage boost within blood weapon and / or 80s Delirium.

Dark Dance has no real place if you ask me, they might as well make Dark Mind omni-damage based or bring back Shadow Skin. There is no reason for massive parry play without a skill that goes off after a parry similar to PLDs shield swipe after blocking.