With tongue only halfway in cheek, I would suggest going back to the pre-jet era, when back-up warning systems were thin on the ground, and see what the statistics were like. Of course some of the newer complexities were not waiting to trap the unwary (slats, autothrottle, and autobrake come to mind there are probably lots more) but there were old ones to substitute, prop controls, mixtures, ADI injection, supercharger, carb heat, cowl flaps, 10-tank fuel systems, etc, etc.
Of course in the old days without FDR and CVR, evidence from the smoking heap could only indicate "probable cause". Don't know how statisticians would deal with that.