Unless some joker decides to do DUB or SNN -BOS with a narrow body A320 or such 737, equipped with high density Y seating and a "Business Class" with the same seating and the middle seat blocked. DUB/SNN-BOS is not that much longer than HEL-TLV flown as an intra-European route. I would actually not be surprised to see Ryanair attempt it in the name of fair competition or as an attempt to foil Norwegian's extended plans.