I'll say this. Two years post A50 is just so aspirational!
There is so much to be sorted, I can't see it being finished by then if it is triggered in March.
So seven months in, does anyone actually know (whatever way you voted), what the implications good or bad actually are WRT Brexit? I don't think anyone knows yet, even Saint Theresa of the Roses. LOL.
Anyway, NI/ROI/UK relationships will suffer. That is quite sad. No mention of NI anywhere AFAIS. But then again the Tories would be quite happy to just unhitch the Province anyway. But there is more to it than that in the mix, think Hard Borders, resurgence of terrorism, all the hard work done up to now gone.
I realise NI in the grand scheme of things is a blot on the landscape, but it shouldn't be. Like Scotland it is part of the United Kingdom, and ROI and UK have a unique relationship now that was hard won by the Good Friday Agreement.
I hope that is not affected by Brexit.