The Coconut Grove Playhouse shut down in 2006 during its 50th anniversary season. It was $4 million in debt. The county has a plan for a small theatre to replace it. But Mike Eidson has a bigger idea: “a civic center dedicated to great theater in a modern playhouse complex would be a tremendous amenity and asset. . . . It sends a powerful and indisputable message to people who want to live and invest here that we are a serious, maturing city.”