Aer Lingus: DUB-BOH-DUB (with connections to Aer Lingus New York)
Complete wishful thinking.
Aer Lingus/Aer Arann would be mad to go head to head with Ryanair on DUB-BOH. No one is more aware of this than Aer Lingus and Aer Arann. Much more likely would be a Dublin to Southampton service against Flybe. Flybe are less competition than Ryanair, and the runway at Southampton prevents direct competition from Ryanair.