This is a silly post. I think you're well-intentioned, but it doesn't seem that you've thought this through completely. Allow me to explain.
The definition of "sustainability" demands that growth is able to cover the costs of the infrastructure required to support that growth, and that such infrastructure is simultaneously capable of handling that growth. We see much evidence to the contrary in Southeast Michigan. Who do you think pays for the roads? The new school buildings that are required? The sewer lines? Are we to believe that owners of homes in new subdivisions pay these costs out-of-pocket?
At the same time, you have a road network that is easily overwhelmed in the outer areas, and under-utilized infrastructure toward the urban core. Is this the most efficient use of resources? The mere presence of infrastructure does not imply sustainability--someone has to construct that infrastructure in the first place!
The idea that the "suburban town center movement can be replicated in cities" is misguided. The creation of faux town centers [[i.e. plastic malls with a different spatial arrangement) in the suburbs is simply a poor attempt at replicating a true urban environment--you know, the kind of mixed-use zoning that used to exist before World War II. I personally don't believe in "thematic schemes", but I do think that we're going to see a lot more mixed-use properties in the future, IF zoning regulations are altered to allow it. As it stands, we're seeing farms become "town centers", while the City of Detroit destroys urbanity to build strip malls and large drive-in, drive-out venues.
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