A lot of people walk to Rose Hill that will choose to drive to Maple if Rose Hill was closed, Marple station would then need a LOT more parking. As it is too far for a lot of people to walk (and some people don’t have a car) a bus would also need to be provided that linked in with train times – this would not be a bad think to have anyway.
A lot of School Children use Rose Hill Station, would the parents just drive them to School if the station closed.
There are two sets of train track into Manchester, so trains from Marple need to go both ways to serve the other stations on the two set of lines, therefore the saving from having a single Marple station are not that great.
It is easy for a train to wait at Rose Hill until it’s time to return to Manchester, has Marple station got enough space to turn round enough trains?
However we can still fit in a Super Market without closing the Station by using some of the other land round it. More jobs would be created at the Super Market then lost at the few companies that would need closing. However I would rather have one large new supermarket for all of Maple, then have two new smaller supermarkets.