Other than gankers, the majority of players didn't want what CRZ became. They chose specific realms to play for specific reasons.
Anything related to CRZ would've been a huge success if it didn't take community -- and nodes -- away. It's the loss of both that stinks with CRZ.
It should've been more transparent and even optional for players. Not everyone would have a use for CRZ this late in WoW existence, as multiboxing and RAF has become more commonplace, anyway.