All I need is my furry fists, um, I mean my fists of fury. Or maybe my stolen hotel pen to stick 'em in the eye. Here's some other things I'd like that probably won't happen.
A trap door in front of the cockpit door to flush the bad guys.
Have the seatbelts only unlatch when individually selected by the flight attendant or pilot.
High voltage shock seats to zap the bad guys.
Electrified barbed wire and broken glass glued onto the back of the cockpit door with a junk yard dog chained to it also.
Every seat in the back an ejection seat controled from the cockpit.
Flight attendants all beautiful female ninjas.
Killer baboons trained to attack anyone not in their seat when released from the forward coat closet in hijacking situations.
Walker Texas Ranger (or other suitable action star) required to be seated in the front flight attendant jumpseat in case of emergency.
Any or all of these would be welcome onboard my plane any time.