And what about the millions of Irish citizens living elsewhere?
Good point - a large section of western populations have Irish ancestry.
1 in 5 white Americans, 10% of U.K. and Australia, 14% of Canada. Not to mention rest of the world - the Irish diaspora is huge.
All of them can claim citizenship by Irish descent... you're gonna need a bigger premine

Who launches an Irish coin at 10pm on a Friday night? The Irish are too busy drinking.
Another good point!
still a large number of people that see Ireland as one nation including the North.
Including the U.K.?