The only problem with some of the "bright" ideas posters come up with is that it would add an extra hour to board an A380! As someone mentioned above, in recent times more and more airlines (including those legacy carriers who began to charge seperately for hold baggage) have encouraged passengers to travel with carry-on only. Consequently I place the blame squarely on them. Oh, and it should not in any way be the concern of the security personnel. Their heads are big enough as it is!