Sorry if this has been brought up 10,000 times. How about some global chat channels. I could see a guild recruitment channel. Other than that I don't know how useful they would be. A global trade channel would be hell on earth.
And by global I mean every district all towns on the same channel.
Global Chat Channels
DismalClown
Gs-Cyan Bloodbane
omg no. wayyyyyyyyyyy tooo much info