I don't have much faith in the ability of "public art" committees to choose art that enhances the attractiveness of a city. The best example of how lousy these committees choices are sits in Ottawa on Elgin Street, a concrete horror to women's liberation, and a few other high ideals. It should be destroyed and used for street improvements. Find a sculptor and committee of folks with the common touch to create something that is inspired by the ideals the statue expresses, and  inspires those who  look at it to meet those ideals.