Wow that could indeed be very useful for misfire detection.
I believe that's how motronic 7+ detects misfires - it expects to see the tooth rate on the 60-2 accelerate a certain amount at the firing phase for each cylinder. if the tooth rate for those (maybe 3 or 4 teeth?) is too slow it knows the cylinder didn't fire.
I'm not sure you could trust it for tuning individual cylinder trims though as I don't think many motors have even enough compression across the cylinders for you to be able to trust that a certain cylinder making less power is solely fueling related.
But having a specified cylinder-to-cylinder tolerance for power and then flagging when a cylinder goes out of tolerance would essentially be misfire detection and would be super awesome.
