Even if everyone behaves I do not believe that 'global' chat scales well beyond a few dozen of people. They would need both a filter and a room feature to control the pure noise (filter I was thinking of player X being able to ignore anything player Y sez as well as a language filter setable by the user). These features are nice I think but I rather they first fix some of the bugs in the game as well as add new content - though my preference might not match yours.
