BOS-SNN would be the obvious candidate for A330 operations, but there is a problem. Without positioning flights I can't think of a way to get the A330 on SNN-BOS and the 757 to DUB-BDL/PHL/IAD. For that reason, I wonder if the DUB routes are more likely to see the A330? As an aside, do any SNN crew still operate on the A330?