Well said clareview..I'd go further and ask why do they not integrate with all their flights ex-Dublin?
For example, this winter Aer Lingus are cutting their flights from Cork to Geneva from 3 per week to a weekly service despite high loads last year. Why not offer flights with Aer Lingus regional via Dublin in addition to their direct services from Cork?
If Aer Lingus are really serious about making Dublin a hub, they really need to work with Aer Arann implementing connections for all destinations ex-Dublin for all the Aer Arann/Aer Lingus Regional flights.