And the Senedd only has a fraction of the power that the Scots Parliament has.
As far as Northern ireland is concerned, the smartest thing the Protestants of NI could do would be to unite with the Republic of Ireland.
But they won't.
To much bad blood that has little to do with religion.
The present situation will change mightily in the subsequent generations due to the high Catholic birth rate in N.I. The present balance between Protestants and Catholics is about sixty-forty. It will be closer to fifty percent Catholic in twenty years or so at the present rate.