It's like you said, it can be hard sometimes to get your true intentions accross and people can precieve things poorly. Things just seem to spiral out of control a lot eisier in main threads and at those points no one is really having fun any more :(

Of course, if people don't want to use a diplomacy thread, they could always send out in-game massages and PM's to their neighbors to gang up on those they think wronged them >:}