Room generator

I have a server of around 100 members, and we have a section called "limited rooms" that has voice channels that have a member limit, we have 2 for 5 members, 2 for 4, and so on.. 

The issue is, these rooms really crowd the channel list, and they're rarely used, but when they're needed, they're needed. 

My idea is a new type of "generator channel" where you type in a number and click it and it generates a channel that allows only that many people into it. When the room is empty for 5 minutes, it deletes itself. 

That way those limited rooms only exist when someone's using them.