CRZ was definitely implemented to use less resources on their server farms and make the old world zones look more populated. If it was just your server alone it would probably look pretty dead at this point. This is the overall negative that comes from CRZ and it does truly suck. Leveling up one of my teams through Hyjal the experience was awful. I think Hyjal itself is the worst spot this happens in for ganking. You do have the option of going to the water zone but I hated the water zone. The only positive I took out of this is I truly despise the Horde now being on Alliance. Whenever I see someone from the opposing faction I feel no remorse for taking them out. I used to be a softie outside of arena's/pvp