My $0.05 (rounded up since our pennies are now sunset)
Perhaps it would be useful to deploy a central website/product that could be used by hosts and players alike to organize and register for public gaming events. At the moment we rely on threads posted in the Games and Event Schedule forum of ASC and unfortunately more effort is required to lookup information rather then having it organized in a more easily viewable format.
I have seen some "internal chatter" that one of the major Canadian airsoft vendors might be prototyping such a website/product. If all registered games could be summarized on a central page it might go a long way to preventing the scheduling of games on the same date and in the same area.
Of course this is based on the assumption that hosts do want to prevent the scheduling of conflicting and competing games ... if this proves false there's very little we can do.