Eh… is that addon on Curse? Sounds awesome!
I want an addon to show an icon above enemy guild/community members head, maybe show number of kills dealt/received from that player beside icon. Maybe could be a plugin for Spy addon, it can detect specific enemy players with a Kill on Sight list, and players in their same guild. I am too lazy to make it!
Sharding is for sure an issue for community. If there were enough WPVP guilds and communities, maybe sharding could be used as an extremely difficult guild hunting challenge, or possibly fair fight events despite sharding.