Since the issue with battlegroups today, there is an opportunity to properly set battlegroups on Anniversary servers.
There was great care in “strict faction balancing” the PVP servers. Either keep each PVP server in its own battlegroup for battlegrounds, or join all PVP servers in one battlegroup. Please do not join all anniversary realms in one massive battlegroup!
If Blizzard joins all the anniversary servers together that this will cause an imbalance of horde/alliance and long queue times of those on the imbalanced side.
Those who care most about PVP are the most effected by the battlegroup choices and those people chose to be on PVP servers. If all anniversary realms are joined in one battlegroup it only benefits those on PVE servers. PVE servers should be in there own battlegroup.
Please highly consider battlegroups, the realms that should be together for anniversary and their impact on PVP servers with people who chose PVP (and balanced) servers.