What you want to do sounds the same as what Slew rate programs are designed to do already. You set the rate of acceleration curve, if for some reason the engine is accelerating quicker, timing is pulled to slow it back down to follow the programmed rate. That's the simplistic definition.

MSD 7761 ARC controller or the 7531 both have that functionality.

It is illegal in most classes so finding people with experience is difficult. Look to the fast heads up guys.

As Trendz said, Riding the dots isn't going to be the fastest way down the track, but it will prevent a bad run from becoming a terrible one.