If facial recognition goes into effect in all airports, the feds will ultimately collect millions of face prints. Like China, these could be used outside of airports to track the comings and goings of people most anywhere. (Many cities already have hundreds if not thousands of cameras.) I guess it's okay with you if you wouldn't mind the federal government keeping track of you wherever you are and where you go and what you do. Like China and California, it's more about control of people than it is about security.
It took 11 years, yes, 11, for the government to come up with the three hour tarmac limit. You may remember the first outcry came when Northwest planes were backed up in Detroit during a blizzard. Northwest kept landing planes even though the gates were full. There was a huge furor. But the ruling didn't come until 11 years later due to the airlines fighting the rule and government bureaucracy inertia. Don't look for a ruling anytime soon on seat size or pitch.