Actually it's already random right now. I thought perhaps random would help us get up to 12 SPS or higher, but it did not unfortunately :-(.
I've got one other minor 'secret' gimmick programmed into the fire rate of the COD5 code to try to make it future undetectable but only time will tell. This game of cat n' mouse will go on for awhile now. So the best we can do is wait, see what the game companies come out with, and get out patch fixes for our USB controller as fast as we can.
I don't think the random fire will help with future detections anyway, they seem to be measuring average SPS over time.
Thanks for stopping by the forums and keep the good ideas coming!