They can simply limit account addition to over populated factions on specific servers… If the population is more bias than say 10% just a reference number for demonstration, I do not know what a working threshold actually would be in this situation…
Then Blizzard could manage the servers populations by limiting the ability for a player to place his account on the server faction that’s over populated on a specific realm, on a realm to realm basis.
This way the populations can stay close-ish to 50%.
They can also close certain servers to new accounts to limit over populated realms in order to encourage growth on lower population realms.
Realms that have a super high population could even be opened to a certain number of character transfers to alleviate the high stress situation, and there are a few ways to handle how that can take place.
Proper realm Management is the key, and this is something that a computer program can be developed to do automatically…
The blizzard sponsored transfers should be free of charge to encourage the players to do so; they could wisely target accounts that are either mid pack guilds or solo players who are guildless based on the target server and its demographic.
There are a lot of very intelligent ways to handle these issues and the logistics are very simple, the management solutions are very simple and doing this in a very wise and seamless way can and would keep the community strong while preserving it long term.
Servers who have practically died can be shut down, the accounts that are then mothballed will be saved indefinitely, but if they elect to come back then can be shown where their active friends have been moved too in order to continue those relationships.
All of this can be automated with almost no actual human labor after implementation.
They can even include “friend sponsor” accounts where on a high pop realm that’s presently locked a sponsor can help his non-Classic WoW buddy get onto the server.
The number of sponsored slots could be limited to a certain number so that things dont get crazy.
Additionally warning’s could be included in any realm faction or server that’s over populated with an explanation of the negatives of making that choice to play on an over populated faction.
These active solutions would preserve both the server community by keeping it alive and preserve the PVP community of that server by also keeping it alive while maintaining that local server atmosphere…
Would any of these things do wonders for low level PVP players? Not likely, and for that CRBG is an option, I just don’t feel it belongs at all what so ever in level 60 PVP… Because AV is a split level bracket that is 51 to 60 it would not and cannot include CRBG at any point ever…
These are just ideas I have seen posted in the forums that make sense too me.