This kind of came up on another thread but it's probably worth a conversation on it's own merits.
Personally, I want to see a united Ireland, by consent. In the interim, and in order to foster the belief that we are one nation and can work together I would propose that NI MPs would be allowed full speaking and voting rights in the Dail. (don't know how to do fadas).
The arguments against could include that NI residents don't pay taxes to Dublin therefore should they be allowed to influence spending here. I would counter that Dublin wouldn't be spending taxes in NI so that issue shouldn't arise.
Another potential issue is that Unionist MPs would probably boycott the Dail. I would agree that is likely initially, however I think the pragmatic, especially as time wears on, will recognise the real politik of the situation and the opportunity that influencing the Irish govt could offer them. They could even be in a coalition govt.
Overall, I think it makes a united Ireland more likely and shows the world that we see our nation as one right now. Practical issues like non coincidental GEs can be accommodated by allowing sitting MPs to participate in whatever Dail they find themselves.
I wonder what reaction, if any, there would be from the British govt? Can anyone see any practical impediments I'm missing? Does anyone have any ideological objections? Could this be a help or a hindrance in a manifesto for a party in our upcoming GE in the Republic?