When UK Labour Regains Power, Should It Reverse Brexit?

[Frodo]

There is a lot of buyers' remorse going around among those who originally voted to leave the EU.... 

Poll of polls show Brits have officially turned against Brexit
The average annual gap between those who believe it was “wrong” to vote to Leave compared to “right” is almost double what it was last year.

[Frodo]

It was an error to leave but this does not mean that it would be a good idea to go back in. What would make sense is further alignment with the bloc; economically beneficial all around and would not cause political difficulties, at least not for a Labour government. The present state of affairs benefits precisely no one.

So you're saying the UK's best course of action is to negotiate similar (though perhaps not identical) terms that Switzerland currently enjoys with the European Union?