When flying, all passengers should be forced to wear airline issued jumpsuits free of zippers and other metallic trim. They should also be provided with books, magazines and movies at the airline's expense, but be allowed no carry on baggage. This would cut down on the security check time and the huge amount of time waiting for people to properly stow their baggage.
Failing that, anyone who tries to carry one of those bags that is far too big for the overhead bin, but hey it has wheels so it must be a carry on, should have to ditch the bag and be forced to fly crammed into the overhead compartment.