There seems to be this assumption that we'll simply stop trading with the EU (if and!) when we leave - this is clearly not the case, much as we already trade beyond the EU to an increasing degree (trade with the EU is declining as a %age of our international trade anyway).Can't agree with that. Most of those countries have axes to grind, and aren't exactly in love with all things UK. Look at how India operates in negotiations and how long they take. In fact, they are more likely to strike a deal with the EU now that the UK's objections to sky high whisky tariffs and a more liberal visa policy are more or less removed from the equation.
And please don't suggest that deals with Can, Aus, NZ etc will provide more opportunity and return than those already in place with the EU. That's without even going down the road of what will be lost with many smaller economies that will lose FTA access to the UK through their EBA (no tariffs or quotas) agreements with the EU (which aren't ready to be rolled over in the event of a hard Brexit/no deal).
I say CANZUK as they're our more "traditional" trading partners and are, by and large, very eager to do a deal as it would be to mutual benefit.
In other news, Guido screamed out "Rees-Mogg defects to Brexit Party" - only it's JRM's sister doing so.