Airports don`t make money from Lo cost operators as they want everything for free
Manchester doesn`t need anymore LC they need some more long haul full fare airlines in the same class as Emirates or American who carry lots of pax who are willing to pay for the service
Air Berlin are not lo-cost they are a full service airline that just happen to be cheap
If you add up how much low cost there is out of Manchester you will be very suprised as I think Manchester has more than Liverpool and certainly a better selection of operators
Ian