People here express themselves with the sort of arrogance that people support monarchy in my country. A united Ireland won't happen not for another fifty or hundred years. Comparisons from the past are pointless, in order for the British people to want to live in a unified island state, they will need to be feel welcomed, even the flag of the country would change. The Irish nation as known won't exist in a united Ireland, no way, it would need a new cultural shape.
If peace is possible, then the peace gates need to be removed, so it doesn't matter who is from what area or what ever.