I unsubbed just to save some money, I can subscribe again, but I don't feel the need to. I did all the content I wanted to do (LFR sucks to me and I don't have enough people to do flex or normal.)
I'm definitely coming back for WoD So I might just wait until then, unless the Beta and the news coming from the beta get me hyped up again.
I'm guessing a loss of about 1 Mil, maybe less due to WoD Hype bringing back some returning players.