They should apply that to CRZ as well. Expand the ignore list. And anyone on your ignore not from your server, will be put into a separate version of the CRZ zone. If they did that, believe me, I could handle that just fine. I'd be in full support of such an addition. Because from my understanding, if x amount of people are in a zone, CRZ makes a second copy and starts moving people to it. So here's the hypothetical:
You are from Wyrmrest Accord.
Jerk-SistersofElune has been a real jerk to you. and you put him on ignore. You leave the zone.
Upon re-entering the zone you are moved to a different version of the same Zone, away from Jerk-SistersofElune.
Problem solved. They did that, and even I would be happy.