Allow functions in servers to run /stop

In minecraft 1.14 came the amazing /schedule command. There are so many great ways to use it, but the first one that came to mind for me was restarting servers every X hours for people that host them on their own computers which can't be done in the vanilla game via command blocks.

Since functions and data packs can only be added to servers via the person that has access to the world files, I don't see an issue of there being cheaters on the server running /stop commands on a loop in repeating command blocks since they can be turned off in game anyway to fix it if someone did. People already make /kill loops in command blocks, I don't see how this is different. 

Right now in the server console it says that it has no idea what the stop command is. I think this is because it looks at the list like a command block. What can go in command blocks can go in functions, however some player available commands are not available to command blocks (stop), thus not available to functions. (Not tested, just me thinking)

The easiest way to fix this is to allow functions to have access to all of the commands an OP lvl 4 player can access, while still leaving command blocks themselves as they are. It seems simple to the average minecraft player, sure just add it to the list of available function commands! But what I think is if it is enabled for functions, it would allow for command blocks. So we can't just use that one command. Unless the library of commands available to a function is easily converted to what OP players have.