Ability to mark player as 'not using mumble'

When a medic/heavy/engy doesn't have mumble, you want to kick them but you know it might kill the lobby as it takes ages to find another one (They are in short supply after all)

Would be good to have a button to rep people specifically for not being in mumble and then specifically block them from mumble matches for X days (increasing time if they continue to violate).