You cannot automate out the human flying the plane. If you cannot trust the pilots it just doesn't matter what you come up with. In my opinion, ( 30 year ATC retired) that whenever the counters try to come up with ways to automate out the human factor, you lose something because invariably the skill set subsequently required is lowered.
Now the bean-counters can argue that because of a new program they no longer need to pay for experience. Human factor issues are what they are. I don't know the answer, but somehow trust has to be restored and professionalism.
And too, try to stop the reflexive "fixes" when vulnerabilities are determined, ie, the 9/11 stuff. More than one of those planes had hijackers already sitting in the jump seat, no?... the cockpit door, the banning of knives, shoes, et all, is so knee-jerk. Understandable for sure, but frustrating in practice because they don't address the real causation.