Yeah, it isn't totally easy to do this. But, if American ingenuity can already build the airplanes, fly them around, and deliver a lot of people with relatively high levels of safety and comfort from a to b, then this additional detail ought to be a soluble problem - do-able on a scale smaller than the space program.
Just as prayer does not provide a very good method of contraception, it shouldn't be the first - or last - line of defense in passenger aircraft. This isn't a solution for all of eternity, it is a solution right now for a problem that seems fairly immediate.
And if there really are some truly crazy people piloting passenger transport aircraft - even moderately crazy ones, then this offers a great opportunity and rationale to refocus their career choices.