Give anyone in the chat the option to see how large slowmode currently is.
Currently /slow sets the slowmode to default 120 seconds. It could be used to let chatters look up how large ist is.
This would help moderators to better set their slows based on channel activity. It would also prevent chatters from spamming the channel with "slowtest" messages.
It should also show which moderator last changed the slowmode (only for the broadcaster and other mods).