I'm not as optimistic as you. Remember, just recently how some people have behaved in the air, throwing massive hissy fits when they don't get something they want and attacking flight attendants who tried to calm them down? I hope that kind of misbehavior by passengers on airplanes will not be tolerated any longer(and my guess is that the penalties will be stiffened due to the difficulty of distinguishing it from the initial stages of genuine terrorism on a plane), but I still wonder if the spoiled brat people who pull that kind of crap will be right back in action after this has died down a bit.
I'd wager the amount of air rage is going to go way down for a good while.
If someone makes an aggressive move on any flight I'm on, I'll risk jail to put the SOB back in his or her seat.
But I think removing alcohol from planes would help immensely.
Make sure all the flight attendants have access to a taser. Zap those idiots, let them sleep off the rest of the flight, and have the cops greet them at the next stop.