GlueBall,
Oh I agree that it will be real hard to hyjack the avg plane anymore because of PAX intervention, but I also think it will be hard to fly a plane with the door on fire and a madman standing there with one more cocktail ready to throw on the first brave soul down the aisleway.
I also know that the doors can only withstand 200 lbs moving 5 mph before busting. I way 220 and can get moving a hell of a lot faster than 5 mph.