EU referendum, brexit and the aftermath

If it went ahead I can't help but think a single market style deal is the only outcome. If the vote was to remain, then brexiters would rightly ask for a best of 3.

Given the total lack of parameters in the 1st ref it would make structuring any sensible ones for a 2nd very hard.

It needs a 2nd referendum to be sold not as a rematch, but as a new vote on the options that the government has managed to negotiate. These are likely to be shit but if people still want them they can vote for them.
But I think the major stumbling block to getting a 2nd ref would be getting agreement on the mechanic. As has been shown, exactly the same votes on a 3-way question could give 3 different results dependent on the mechanic. (No-deal / deal / remain)