Some years ago there was a rather famous court case which led to a change in the Irish constitution.
https://en.wikipedia.org/wiki/Chen_v_Home_Secretary
Basically before this case if somebody was born on the island of Ireland they were automatically entitled to Irish citizenship. This loophole was cunningly exploited by a Chinese family wishing to remain in the UK by having a kid in Northern Ireland.
After this case Ireland closed off jus soli and changed the rules so that somebody born on Ireland could only be Irish if their parents were Irish...... OR British.
Which....brings to mind a possibility. Given Brexit the opposite of this court case now seems desirable. That British parents may wish to have children born in Ireland so that their child may have full European rights and by extension via the mentioned court case the parents would reclaim their rights too.
My question is...is this assessment correct? Or is there something I'm missing here? For anti-Brexit brits is checking into a Belfast maternity hospital a valid approach to regaining their rights?
Note that this is a purely theoretical question. I am not currently expecting any new children and my kids maintain a right to live in around Europe via other means!