UA operates year-round daily to EWR and summer only to ORD
EI planning year-round service on 757s to BOS and JFK
DL dropped winter a few years ago, and operates a summer seasonal service.
Perhaps DL would be willing to drop a summer seasonal route to SNN in favour of trying a year round ORK service to a slightly different catchment area.
I think that UA are best suited to a ORK service because of the strength of their EWR hub, which is larger than DLs hub in JFK.
US to PHL i believe misses the NYC point to point traffic.
I'd love to see EI try a JFK - ORK - AGP service on a 757. I think both routes would benefit each other.