I think the most sensible thing for Johnson to do would be to accept the EU's request for an extension to the transition, preferably (for him) pushing it out to ~2025.
Then he can say that he got Brexit done (we've left) but that none of the consequences that Project Fear spoke of have materialised (ignoring Honda, the EMA etc etc, which the right wing press will let him off). That way he gets to spend his entire period as PM as The Man Who Solved Brexit - whilst simultaneously having kicked the can into the next PM's bucket.
I think the most sensible thing for Johnson to do would be to accept the EU's request for an extension to the transition, preferably (for him) pushing it out to ~2025.
Then he can say that he got Brexit done (we've left) but that none of the consequences that Project Fear spoke of have materialised (ignoring Honda, the EMA etc etc, which the right wing press will let him off). That way he gets to spend his entire period as PM as The Man Who Solved Brexit - whilst simultaneously having kicked the can into the next PM's bucket.