My friends have been arguing who gets to be my partner in 5.0 XD and its all down to that crit DH buff, though while it is nice i would wait to see the full kit to see how much different buffs dnc can provide the more it offers the more likely it would be bottom on the pDPS totem poll, but since its a DPS i expect it to still remain above healers and tanks pDPS, so it has a good shot at farming/padding groups rather than clear/prog groups unless a fight is designed in a way for needing those buffs early on (because if they designed a fight where these buffs are mandatory that is bad fight design).