Personally, even as a non-Celt, I'd like nothing more than to see a British and Irish Premier League - and a regional set-up for the clubs competing to get into it... simply to save on extensive travel costs for both clubs and fans.
I'd also like to see a British and Irish 'national' team. Hate seeing the home country teams (including England) getting stuffed in internationals when I know these islands combined produce awesome talent between them.
The Brits and Irish have always been at their best both when working together and competing amongst each other.
All this divisive stuff is just plain bollocks. Diversity rules.
The Irsh are as British is Fiji!! Why should they hang our coat tails? They already have a team full of players not good enough to get in the England squad (which says how poor they must be!!) The 4 nations joke of a tournament showed how passionate these minor countries are, not even 10,000 at some games. England would have filled the ground.

