Tick Command for Command blocks

It would be great to have the tick command at a lower permission (like 2) so command blocks can use it. I'm making a minecraft adventure map and I wish to have a way to make the tick freeze without having to use a clickable event with tellraw (so it could be used in functions as well without having to change the server properties).

Asking command blocks to work while ticks are frozen would be crazy, but I think lowering permissions for that command would be a start.