Not necessarily, I remember hearing something which is done up here on bonfire night which could easily be adapted. A crew gets given a doctor for the night and sent around all the minor things so the doctor can declare that they have no need for an ambulance, hence freeing up the others. Surely just a few ECP types sent around the people who are obviously trying to play the system would bring up the average response time? After all you've said before that the folks in control know when the system is being played but have to follow the rules.