One of the key factors to remember is that MAN itself has frequent scheduled services to all seven BAA Airports in the UK: LHR / LGW / STN / SOU / GLA / EDI / ABZ. Services to all of these would be lost.
Whilst there is always a possibility of picking up *some* extras - with the provisos mentioned by previous posters above - MAN would actually need a substantial haul to avoid showing a deficit on the whole sorry affair.
But we can still hope for the occasional gem for enthusiasts!
SHED.