In a parallel universe, the Co-op Group becomes so desperate to free up cash that they look to their real estate and see they're sitting on a pile of money with the Marple store, sell it and a new supermarket completely redevelops the site with a bigger store and multi-storey/decked parking. This is not so far-fetched - a large number of Tescos and Sainsburys have been rebuilt on the same site or nearby in recent years. The Co-op occupies a "huge" site, in Marple terms, but it's very inefficient for a town centre supermarket design, with a big delivery yard, woeful car park and that row of relatively useless shops which any meaningful supermarket chain would have knocked through into the main store years ago.
Meanwhile here we are, having to discuss which parts of our town to plough through elsewhere in order to fit a decent supermarket in.
Worth noting Marple remains on Aldi's hitlist, who only need small plots. I really hope they find somewhere, as they'd be the absolute death knell to the Co-op. Chadwick Street as planned would probably be too expensive, but you never know, if they're that keen to get into the town...