Text and Voice Channel White/Blacklist in Roles menu

In servers with a large number of channels that need different roles to be allowed in them, being able to edit the channels a role is allowed to see directly from the roles menu would be great (vs currently, where if I add a new role I need to go to Edit Channel > Permissions > Add Role for each and every channel that the new role has different perms for).

I'd like to be able to open the role menu in server settings and at the very least change the View Channel and Send Messages options for each channel from there so it's in one place. A dropdown or secondary scrolling section with the "[N][ / ][Y]" selector (like what's in the original channel perms section) for all available channels would save so much time and a lot of headaches.

I know that doing all of the channel settings from there is unrealistic and would probably be a visual disaster, but I feel like those two options are what most people edit for each role anyways, and the channel settings page would still be available for the more detailed control it already has.