You can't patch away stupid. Even if this combo, that should not be nerfed, was nerfed into the ground those same players would still spam it screaming in their minds "Ima doing GREAEAT!!! Ima war nimbar owne!!!1
If you tied the combo to tank stance those same players would stay in tank stance so that they could go on spamming it.
The only thing a nerf would do is punish those of us who only use it when we have to, it would force us to use it more and in so doing be a dps nerf to the entire class.
Like I said, you can't patch away stupid. If they this far into the expansion still does not understand that BB is a dps loss then they will never understand it no matter what, heck I bet you could pay someone to slap them in the face every time they did this and they would still never learn. Nerfing BB will fix nothing.