SawMan,
I don't believe the security screening we encounter has done anything to reduce terrorist incidents. At best they have been diverted to shopping centres, underground trains and buses.
As sheepish as the normal air travellers may be the will not, and would not, accept a minimum 2 hour (meaning a 3 hour) check-in requirement, personal interviews, questions related to reasons for travel, sexual orientation, and in-side seam measurement. They would not accept being denied boarding because someone didn't like their answers, or their accent, or their skin colour.
And still, what good what it do? When was the last terrorist incident aimed at airlines/airports.