On reflection ...........................if ROI left the EU and a federal system of government for GB and Ireland existed with London only holding the responsibility for national defence ,as much power as possible on key issues that matter to people pushed down to a local level (say local council) -would ROI citizens be interested in that type of relationship .No definitely not but the reality is our political landscape has been defined and shaped by this enormous elephant in the room.
It killed the natural markets for huge tracts of our country. Donegal cut off from Derry?
It allowed the politics of patriotism hide the corruption
It allowed the Catholic church dominate and turn us into a veritable theocracy for years
It prevented us from joining the second world war as an allied nation which would have been our natural position thus excluding us from the Marshall plan
It scared of foreign investment for years
It gave us a massive inferiority complex that is only being lifted in the past few years.
I'm not saying it was the be all and end all but it really didn't help.
Or has being your own country now so ingrained that a different style of government/relationships between close neighbours is impossible.
On the surface I see little difference between most of the parties in both jurisdictions , a cycle of centre right /centre left etc etc mixed up with good old parochialism.
When you actually discuss with people from Birmingham /Sligo/Antrim - most all agree on what they want from life and respect each other .
Ian Paisley's friend and mentor the great Dessie Boal suggested this federal solution in the early 70's and he was ahead of his time on many matters as well as being fine legal brain .