Submitted anonymously:

Currently the guild information section only forces each member to join the channel used as the bridge. Would it be possible to add the ability to force another visible channel to be joined automatically (ie. Guild LFG channel) and apply a password if wanted? Perhaps by adding a new line to the guild information section?

There are two reasons why I don't think this should be added.

1. Channels are a precious commodity. WoW only offers 10 custom chat channels, and they are used by all sorts of addons and other activities.
2. It's beyond the scope of GreenWall. While it would be nice to have this functionality, GreenWall was not intended to be a swiss army knife. In order to keep GreenWall from becoming bloated, I'm going to defer this to the realm of other addons.

That said, a good approach to build this is to write an addon that uses the addon channel (which would need to use the feature in issue #3 once it is implemented) or muxes the discussions in a logical channel hidden in guild chat. I favor the former approach.