Some sort of theme architecture, awnings, public art a cultural district, for example. More people living downtown. More attractions for people museums, ballpark, convention center, a new Mac Court. The perception changes to be one of a safe place, filled with a variety of people. More kids using downtown in a positive way.
Parents encourage their kids to go downtown.
Alive, exciting, interesting experience. Dramatic visual focal point. More full-time residents downtown. Pedestrian accessible, but all vehicular use. More night life, happening place.