Ankh,
if you spend time reading pprune and other venues of discussion, you will easily learn one simple truth:
The aviation industry at large is very against any change, unless they can bring an immediate economic return (and in some cases, not even if so eg, flying more direct routes).
There are thousand of methods and techniques that would improve safety. Many, actually even make sense. Still, they are not adopted.
The reason can be given to you in various forms:
"studies have already proved ..."
"an interesting suggestion, unfortunately ..."
that we can all resume as:
"it's not so useful, beside it costs money".
Since the overall safety record of air travel appears satisfying to most, status quo will remain.
Accept that, or fight like Don Quixote.