WW do not treat MME as if it is a major base. Changing routes and not having good frequencies, particularly on domestic routes adds to the problem as they are unlikely to attract business travellers. When I travel EZY or BE to Belfast at least 50% are business traveller - this is even higher on the BRS route for the early morning flight.
My only concern is that despite the high catchment area, which I'm not disputing, will other airlines look at MME and think if WW couldn't make it work will we be able to?