Cityjet coming to Southend perhaps?
Unlikely I'd have thought, unless Stobart/Aer Arran buy a stake in them. But if CityJet are to be enticed to SEN it will definitely need a comprehensively developed offer along the lines suggested by mik3bravo. It's no use thinking "we've built it, so you should come" anymore. Hopefully Glyn Jones is the chap with enough drive to actually get this arranged on a professional basis which it sadly doesn't seem to have been since Alastair Welch's departure.
On balance I guess most of those 12 airlines, if they exist at all, are foreign-based and surely that's where SEN should score as a port of entry to London especially for Scandinavian and mid/east European airlines able to route directly in rather than face ATC delays and roundabout routes to other London airports. Missing out on both Wizz and SAS when they recently sought a new London terminal was unfortunate......