Being a frequent traveller, I don't think BA are making the correct move. It is setting up passengers to push BA to the limits, now!!
Instead, airlines should take a look at how they treat members of the public who are often paying huge amounts of money for air tickets (like £3500 GBP London-NY-London in Biz Class alone!). You are made to queue in cattle lines in noisy, crowded terminals, check-in staff couldn't give a stuff about smiling, welcoming you, making you feel comfortable (even though you've had a stressful day, pressure to get to the airport, etc.). Then, the check-in agent barks: we've changed your seat due to aircraft configuration change...your nice upper deck window seat is now a middle downstairs seat...you are trapped for the next eight hours...(no apology, just tough, take it, bud, and piss off)...No wonder people get hysterical when they are treated like this.
As for on-board air-rage, note usually either prescription medication or alcohol are usually the culprits, and lets face it, booze flows very freely (lets have a few gins in the lounge, some champers on boarding the plane, more after take-off, some white wine with your starter, red with the main, oh, a little port with cheese, and why not something afterwards....)...and that is on a flight from London to Istanbul! Hello? Lets not kid ourselves that it is pushed onto travellers, in order to hush them up, keep them in their seats and quiet.
Sure, some people push too far, and rightly should be dealt with, but they are the extreme exception, not the norm, and airlines should work much harder to create a more positive experience all around...and tantalising passengers with newspaper headlines about banning rude passengers is not a good start....