FR have reduced frequency to DUB on a lot of the regions. NCL now only has the one flight daily, and with no EI service any more, it seems like a gaping hole in the market.
An evening NCL-DUB could complement the FR service for the passenger. Fly out in the morning with FR and back with EZY!
Ryanair didn't multiply the frequencies over the summer, when EI had an A320, and loads seemed good, despite the fact that the EI product was significantly more expensive.
I am sure the capacity is there!
RTG!