http://www.youtube.com/watch?v=Y8UaSWhiKsU
See video above...
I was (and currently interested) looking to do something like this with a couple guilds. They ended up not having enough to participate.
Pm me if you have a guild interested.
https://docs.google.com/document/d/1...?usp=drive_web
It is a 16 on 16 guild PVP fight where you escort guild whores holding copper to a drop location while destroying another guild or hindering them from making progress.