The idea is good one, doing it correct will be a challenge. People have been allowed the "free for all" way too long and if airlines can manage this it MIGHT - big MIGHT lead to something good. A while ago on BA/Comair I had the drama of a guy allowed to bring a massive catering bag of those orange chips as carry on!!!! I decided to ask if he will do the catering for the flight, neither him nor my wife thought it was funny!!!!