This concept is the antithesis of 'policy-making', by which I mean the purpose is to reduce and simplify the existing code, rather than continue to add wooden blocks on the legislative game of Jenga. Once the code has been cleaned, then the doors and windows of opportunity will open.
If a city, or any entity for that matter, wants to rebuild or reinvent itself it must first know itself. It must know what has helped it grow as well as what has held it back. This concept targets the identification of city roots (an urban-ikigai) while eliminating and purifying the existing restraints that will allow the people, the code-makers, and local governance to cooperate at the lowest common denominator.
It is very easy to imagine an individual walking past a vacant lot and communicating its potential as an urban garden via social networks, but the daunting reality of jumping through hoops and over fire to make it happen deters most. If those fires and hoops didn't exist, or embraced a more flexible understanding of land, these fantastic ideas are more likely to bloom.
A city that awakens every morning with raison d'être will be impassioned and focused. The more simple the reason, the easier it is is to rise and climb.