With the company and product that JB is I just dont see how they didnt expand into ORD ( frontier and spirit did it ) or even take a stab at getting something in MDW. The product is 10 X better than united or american or deltar in economy and the name recognition is good but they just dont fly anywhere.
Europe could be good for them and I hope it is but your only talking max 3 flights a day out of JFK to London and then I dont know where else they are thinking of going in Europe. Berlin, Nice, Hamburg? All possible and in the range and definitely under served citys.
Pff what do I know.