Edelweiss,
Sorry you got the time out for going against the grain. That WILL happen, though, when you step across the line here. I missed what all got said, but suffice it to say, it seemed the thread took an argumentative turn.
So, as to your credentials, taking them at face value, you've been around guns and tactics enough to be able to say, "This might work." However, HERE you are talking to guys who understand what you are saying and feel they don't agree with it for their purpose, which is the purpose you proposed. At some point, you have to just leave your idea out there. Those who think it might be a good idea may take it or leave it.
I've shot a number of set type triggers and I find them helpful in a controlled situation where you have time. One has to tune themselves to make them work. As many have noted here, and I readily accept, that time is not on your side in a number of PRS stages. Taking the time to reset is losing time, when the accuracy advantage isn't there. Good fundamentals on a good trigger is good enough. We aren't looking for benchrest accuracy in a number of PRS stages. The time and "accurate enough" (which is still a pretty tight requirement) are the mainstays.
That said, I see no problem whatsoever in having one or two set type triggers on hunting and varmint rifles. You can adjust a good set-type trigger down to pretty reasonable, and still have that "few oz. trigger" when you want it. In a static hostage situation I could see it being useful. However, liability would be overwhelming.
And, to answer one question previously posted, set triggers were used in the military in the past. They are not used much if anywhere today. Safety and consequent liability, to me, would seem to be the biggest factors.