Of course it is entirely possible that because we pax are all now taking a hold bag with us when before we managed on handbaggage, the volume and weight of hold baggage will rise.
I'm off to HK on Thursday and for the past 7 or so years this four times a year trip has been survived on hand baggage only. As I have to take a case to house smellies etc, I'll no doubt pack a tad more.
Now how long will it take for BAA hold baggage screening to crack under this increased pressure and they dictate to the airlines a max baggage weight of, say, 23kg, and a max size just 1cm smaller than the average Samonsite or Delsey?
Then BA could have it's cake and eat it?