Feature Request: Hiding Channels

So, Server Owners could hide channels from certain roles/@everyone so that they can perform maintenance/role updates/events on those channels, then unhide to release it to the server, without you having to update the server live whilst everyone is in there. This could also be used for channels that are used during certain game events/seasons or (in my case) the Christmas Games, where we giveaway stuff etc. but those channels are deleted for the rest of the year.