[KevinFromTexas]

Really it would be possible to alter their ground floors so that street level retail could be added. There's no reason a whole building would have to be demolished when really it's just a matter of a single wall coming out to put in more windows and street facing shops. The Bank of America Center and Chase Bank Tower both make perfect candidates for it, too, since they have better street connection than buildings that are 10 to 15 years newer. The only buildings that would pose a real problem to adding street level retail to would be ones like One Congress Plaza, 100 Congress and 700 Lavaca which do not meet the street. And even so those buildings could still have different kinds of retail such as restaurants since they obviously couldn't have "shop windows" to draw people in.