Thu 11 Nov 2006McNamara's mini-Manhattan? Maybe . . .Ringsend Redevelopment: A sports stadium, a blue flag beach, high-rise apartments, or a new city park . . . all of these could be part of the mix at South Wharf - a 25-acre site in Ringsend that has just been sold for €412 million. Bought by developer Bernard McNamara in partnership with the Dublin Docklands Development Authority, the site is on the edge of Dublin 4 and the docklands and is set to become an important new city quarter. We asked the experts for their views on what should or could be built on the siteDick Gleeson, Dublin City planner