Across the country, downtowns have transformed dramatically since the 2008 economic downturn, and Detroit could very well be a poster child for the phenomenon. After Dan Gilbert relocated the headquarters of Quicken Loans in 2010, the city's downtown core has transformed in ways that render parts of the city unrecognizable to what they were a decade ago. When the city hosted the Super Bowl in 2006, empty storefronts had to be filled with art installations to make it look like downtown wasn't a total ghost town.…