All sounds eminently sensible but doesn't it miss ticking the crucial box of 'taking back control'. We'd be a passive rule taker with no say over dem rules.It would, but it’s a way out of this mess that ‘respects’ the will of the people; no EU membership and no customs union. Schengen could be an opt out. Brexitannia could crack on with its own global trade deals while retaining unfettered access to the lucrative single market next door.
We were founding members of EFTA, the door is open to rejoin.
Of course it’d be a hard sell to the dwindling Brexiter xenophobe types, but if it is working well in 4 years ? Brexit will have been delivered.