RE: bad things sometimes happen
Tom Hayden probably doesn't desire to shoot himself in the foot with larger cannon. That means some of us bet he has written all he ever will on the subject.
Failsafe settings ARE important, however they DO NOT assure that your engine will not be at WOT when it goes in. Remember, it takes a SERVO and electromotive force to operate that servo and MANY accidents are due to a shortage of volts. Broken switches, failed batteries, broken power connections all appear to be RX failures but clearly are not.
Consider what any one of the above listed faults will do to the screaming cutting machine, with and without PCM or any other type of failsafe. However, I think Mongo has the brightest idea on the block this week. His idea of a generic engine off signal from all transmitters is simple, easy, effective and NOT dependant on us idjots to remember.
Those of you who believe safety lies with MORE rules, requirements, and other intrusions on our fun consider ALL the possible facts before you send out the call for immediate action and more onerous instructions and exclusions from our meager insurance coverage.