I'm in favor of most of these things. Off-duty police and military should be allowed to carry on planes, with the permission of the pilot. I'm not ready to allow teams of Nation of Islam drones like John Mohammed to board a plane carrying a piece just because they got a CCW somewhere. Are you?
Are metal detectors for passengers allowed in your system? That is a search you know.
You still haven't anwered the question that is the theme of this thread. How do you determine if a woman is really pregnant and not hiding a bomb under that bulge in her belly? Nothing you mention will prevent that.
And this has question has nothing to do with disrobing in public or body cavity searches, so let's not hoist up that straw man again.