The only airline I could possibly see attempt a New York route would possibly be VS and maybe not until the summer season.
The chances of another American airline coming to Belfast when all fly from Dublin is very slim.
Aer Lingus is out of the questions
However VS have always been a well known name in NI which is why Orlando has done well, and if we are being honest most of us never thought VS would arrive at BFS with a B747
A New York route would obviously be on a 330 (correct me if I'm wrong) and with regards to crewing from Belfast would be a piece of cake