New public chat channels

We're adding the possibility to group chat channels in the next patch. We'd like to add to the public channels, so I'd like to hear your proposals on this and what player channels already have gained critical mass and should get public status. Here is an example to start the discussion from (Updated list with descriptions, hover your mouse to see it - added even more requested channels and some alliance channels):

We can add formal alliance channels under Alliances if they have gained critical mass. Also some discussion on more fine grained trade channels have been requested. All suggestions welcome.