Easily limiting channel access to specific roles

There NEEDS to be a way to set channel "limitations" to specific roles. When editing a role, there should be an option to limit what channels they can see and use. This could work via a checkbox system, where you click a button named something like "customize limitations" or whatever and then you see a list of the channels in the server with checkboxes. By default, all are checked meaning that the role can see and use all channels. However, clicking the boxes can uncheck (then recheck) them. A checked box means the specific role can see and use channels while an unchecked one means it cannot.

This would be EXTREMELY useful, especially for bigger servers who need to limit bots and such to specific channels. For example, if you have a server with like 20 channels, it can be extremely tedious to go in and manually remove permissions to send messages for all but one, which is what has to be done to, say, limit Dank Memer to a specific #memes channel.