Northern Ireland is a tribal/sectarian bear pit and left to itself is unlikely to ever change till one tribe drives the other one out which is not something I would like to see. This is why power sharing is necessary in Northern Ireland. However power sharing isn't exactly working out now is it? I'm sure we could all argue till the cows come home about who is to blame for this but there is little point in doing so in my opinion due to the fact that more heat than light would inevitably be shed and we would soon get back to going over the Troubles.
Only by bringing NI (or the six counties that make it up) into a larger whole I think is capable of getting rid of retarding and dangerous elements of the situation. A united Ireland whatever can be said in its favour is opposed (and strongly opposed by many of them in the PUL camp) by a majority in Northern Ireland while as the CNR tribe is not going to accept after all that happened during the Troubles direct rule from Westminster.
The SNP want to stay as far away from Norn Iron issues as possible so making NI a part of Scotland in terms of government is out; so what about making it a part of Wales at least on a temporary basis?
Why does the OP hate the Welsh so much they would foist Norn Iron on them? This notion is almost as hateful and idiotic as any notion of Irish union.