I think you should always do more than people ask for. Or, we should not only look at what they ask for, but what they would like to do if they have the courage to ask for it.
DesignBoom has a look at the Bamgoo Bicycle Transportation System. It was designed by Sara Urasini, and won first place in the cargo/utility category at the International Bicycle Design Competition. Simple to make and use, the Bamgoo looks like a winning design for the developing world, and maybe for some of us in the developed world too!
'Bamgoo' Transportation System overview