in fact, what creeper say is possible true but the point is can Helpers like myself can have the perm ./mute? im saying this because when no staff or higher is on and there is few players on. They usually do 2 things: 1 is they dont do anything and second is that they do
stupid actions like spamming with caps, spamming in private messages and spamming tp requests.
About the mute perm, i have some suggestions:
with the ./mute command we aren't able to mute other helpers, staff and higher and espacially Koolio
If abused it will be taken away.
Im just saying this because it will probably be a great help for the Helpers.