I honestly don't think transatlantic charters will ever work from ORK, and I guess this has been proved by the failed efforts so far. I for one would steer well clear of a charter as if an aircraft goes tech (and this has happened alot with charters out of Cork), you could be waiting quite a while for your take off. It is simply not a good option re connections or seasonal scheduling. A legacy carrier would probably work as there is plenty of US MNCs operating in the Cork area and they would certainly rather fly direct to the states if at all possible. Mind you, the US immigration pre-clearance at SNN and DUB is a great asset and something that you would obviously not get at Cork. Anyway, just my two cents worth....