Reply #106: If adjoing communities are built out, they may in fact want to annex more buildable land.

[Gormy Cuss]

Obviously that's not going to solve Detroit's problem since contiguous areas are the only places with that sort of potential.

Turning the city into urban farms isn't going to do much to solve the tax base problem. Ag land is usually converted to housing and commercial, not the other way around, because other uses return more in terms of taxes.