Then there is the issue of combustion burn speed... The engine and
propellor combination is tested and designed to work with the
combustion impulse from the cylinder charge being lit by the
magnetos... When you go to an electronic ignition that radically
changes the combustion impulse and the shock harmonics generated...

Did LASAR do a propeller stress survey for each aircraft/engine
combination? As a minimum I'd think it to be a requirement for any of
the undamped 4 cylinder Lycomings. Otherwise, I'd sure stick with the
Slick mags and let someone else run that experiment.