SOE - bulk or no bulk, a tech stop still adds a huge amount to the cost base, and it is a major disadvantage to customers. The longer the journey, the less MOL can gain by bartering down airport costs, even on a point-to-point service.
I would have thought BGR would be a more likely destination in its own right - but its core appeal would be during the fall, which wouldn't fit in well with other rosters, so I don't see it happening. It might have limited appeal for people wanting to pick up a car and drive across the US, or perhaps as a BOS North, but I don't think we're talking daily service.
Could DUB or SNN - BOS or YYZ be managed on a 738, in a mix of biz & econ, or would this be out of range?