What about the west, the cities of Limerick and Galway combined with their satilitee towns as well as Clare, north tipp and other places north, I'd say one would do well.
Its completely off the cards with EI, KLM (stupidly) only allows 2 codeshares per country/airline. (Don't know which). So its up to KLM and they haven't been known for their rapid expansion since merging with AF.
If Ryanair ever get into AMS, I'd say Shannon would be one of its first routes.