Just delete Feast then.

Obviously people can't play it without getting offended even by SE made macros, and if you're seriously ready to BAN people for that, delete your PvP mode and reopen it when you know what you want Feast to be; Some casual circlejerk where no one is told what to do, or actual PvP?

If it's the former, give us 1v1 PvP Nd link rewards to it, because restricting communication so much defeats the purpose of team based PvP and only serves to annoy the players that find PvP fun. If it's going to be like that I'd rather PvP alone.