Do the conditions mean being forced out after a long spell of warfare or pulling out. Probably in both cases a legacy of bitterness would have been avoided. The potato famine would not be ascribed to Britain. Would Ireland after the potato famine seek redmission provided the relief that was never sent was actually offered? There would have been no 1916 uprising followed by a disproportinate response.
There are issues such as the oath of allegiance and the North that resulted in a civil war in 1922. Would there be a protestant state in the North