Maybe they could make a modern version that turns into a hard side suitcase with roller wheels and a handle that extends so all the dive gear could go inside and then could roll it through the airport. It will be needed to be made of Kevlar as I am pretty sure the luggage handlers purposely try to tear up heavy suitcases.They are so much drag, but dang do you feel cool diving them! I retrofitted one of my At-Pac shells to work with an alum 80, a new 40lb wing (from an RB) and my back plate. I take it beach diving once and awhile.
Instruction and training nearly always lags the technology and acceptance in the market. Just think about how long it took for Nitrox to become a standard training course when hardly a few years ago it was referred to as voodoo gas and considered suicidal. And then there is Solo certification with some still claiming you will get stomach cramps and die without a buddy. I do not even think there is such a thing.