Let's put the code back in Code for All and hold a brigade summit focused on designing, building, and sharing. Brigades from around the world would be invited for a 3-4 day event along with the municipal technologists that hack with them.
Vendors would be invited to give engineering talks about their latest and upcoming features and provide test instances of their products for trying out new integrations
Maybe host it on the rest coast in an affordable city? Just sayin