It should be a simple toggle:
- 1) Connect to Megaserver. This option makes use of CRZ and connects ALL servers. If crowding is an issue to performance, maybe have 2 or 3 megaservers.
- 2) Disable CRZ. This option limits you to ONLY your individual server.
These two options would be mutually exclusive and would toggle like War Mode: requiring you to travel to the capital city to change. Meaning that if you had CRZ disabled, you would not be able to see or interact or group with anyone that had Megaserver toggled on. Including things like LFG and LFR.
Effectively giving people the opportunity to choose between the anonymous convenience, while also allowing for individual server communities to grow and re-establish.
But Blizzard will never do it because it would impact their realm xfer revenue stream. Or would it? I'm not so sure, now that I stop to think about it. If individual server communities started to flourish, it could promote transfers to realms where there was a healthy community, while also causing migrations away from toxic or dying servers.