The problem you have is that a no deal scenario will much more likely lead to the break up of the UK as it will accelerate a referendum on Irish unity and also another referendum on Scottish independence.
But the hardline Brexiteers don't care about that apparently. Be off with these Celts. As long as dear old England gets to flourish its sword against the rest of the world again everything will fine in their utopian dream.
I'm not advocating a no deal though mate. I've said often enough it will be a nightmare. I'm trying to come up with some idea's that will prevent a no deal, or at least prevent a hard border in Ireland. I just prefer it not to be Northern Ireland being in the customs union/single market because of the issues we would then have with Scotland.
Actually I've just thought of another issue you may be able to help me with. The current backstop involves the whole of the UK being involved in the customs union, but Northern Ireland also being in the single market to ensure freedom of movement. But we already have freedom of movement between the Republic and the North under the CTA. Can I read into that the EU are not going to honour the terms of the CTA. Otherwise why include the single market clause. Or am I missing something.?