DJ,
Cornwall needs a minimum of a five and two half days a week morning and evening service to a civilised hub, preferably LON but MAN as an alternative, many many years ago BMA were pulling out, much the same as FlyBE are pulling out now, and a particular hard nosed Kiwi bought the aeroplane and took the route on himself.
Dornier, Jetstream, Saab, those are the type of aircraft required, as for the operator ... well that's a different matter!
And just what did happen to the group claiming to have all the infastructure to restart schedules out of a re-opened PLH ... NQY ain't so far away now is it?
