In 2007, when investors bought Dallas' Cityplace Tower, they planned to turn a big chunk of the office skyscraper into luxury residential units. Boy, are they glad those plans never got off the ground. Since then, the residential market has gone in the tank. And Cityplace has landed enough big office tenants to fill more than 80 percent of the high-rise just north of downtown Dallas. "A lot of times you are better off with the deals you don't do," said Robert Ratelle, managing general partner...more.