Well DUB is the major airport on the Island. If there was a market for it we would see BA at ORK/SNN but there is not currently. It was not so long ago that SNN lost its SNN-LHR EI service for a while so changing from T2-T5 is hardly an issue and would be a lot more of a hassle for them to drive to DUB all the time. I cant think that anyone in their right mind would suggest moving to T5 just for the ORK / SNN folks...