This is something I don't how to implement but I really want children to get involved in planning. They're the ones and always be to sustain the city they live in. And in many cities young generation is leaving the city for education or job and never coming back (maybe when they retire:)
Seeing the city from their eyes may be a new experiment. I don't know how technology works here but it can be applied with augmented reality or gamification maybe setting the legends for easy use and determining the age range and so on...