If GLA gets easyJet, then I doubt Manx2 would even touch PIK. That would be from the IOM before anywhere anyway.
easyJet flights would be able to operate at full capacity also therefore not limiting profitability for the airline.
However if I am not mistaken the furthest destination to be served by A319 from the airport would be for example AMS or CDG?
I don't see how BHD would work for secondary cities such as LPL etc. alongside BFS flights? I can understand LON-BHD/BFS...