This week, Daniel Howes says the Ilitch family’s billion-dollar investment in its District Detroit, anchored by Little Caesars Arena, is being dogged by broken promises. Critics, including a new HBO segment, say the owners of Detroit’s Tigers and Red Wings have failed to deliver the residential, retail and restaurant investments promised in exchange for an infusion of taxpayer money. That’s a problem for other current and would-be investors pursuing landmark projects in other parts of town – a problem only the Ilitches can fix.