Option to limit what permission locks can be set

[Minerpro205]

What problem does this feature solve?

Unsure of the logistics of this one, but the option to only allow certain permissions to be set for /worlds setPermission would be an interesting feature. This would allow easier management over what ranks could see certain worlds since players couldn't just set a "perm.asidjwdj" permission that no one has. Could be a GUI of some sort to pick a predetermined permission level or something.