Could that be separated out? Such that each WW spec does not lock you to a color.
Atm generally black color WWs are the pve spec, and white WWs are the pvp spec.
Would be solid to be able to play a white WW in pve, with light attacks applying the bleed. Perhaps use skill styles to enable player choice with this.
Minor aside, maybe make having two wolves running with you a feature of both specs.