There are classes other than warriors in Wow.
After Baracuda came up with his suggestion I think removing NS from Blood may not be needed. As you say, I don't think Blizz would want Blood to lose the ability to cast NS in a PVE situation, and that's fine. Seeing as the Blood healing is a problem making Tanks suffer more from battle fatigue (in Arena only, mind you) is the most elegant solution.
Exactly.
Edit: Is there anyway to edit the Title of my OP?