Channel messages only for public channels?

Currently any time a channel is created a message gets put in the channel directory.

This makes it so mods cannot create private channels for testing purposes since everyone on the server will see it show up in the directory.

Additionally, channels sometimes require some setup and we may want the channel hidden until it is ready. If we try doing that, though, people will be notified about it before it is finished and visible.

Maybe channels will show up in the directory only when they are created/edited so that students are able to view them?