CRZ is the bandaid fix to low pop servers which is provin more expensive then acutally allowing free character tranfers of low pop server plain and simple.
Take Azshara for example 1 raiding guild and you may get lucky to see 50 people online at a time.
But just like all behemoths you cant stop the ball rolling due to the money already invested in this failed system so only thing to do is continue to throw more money at it.
The only saving grace to this will be Cross realm guilding and hole world auction houses before you flame this second option it will take the issue out of empty AH in