I wish Schengen would one day apply mirror visit policies, to make countries taste their own poison. Like - "Ok UK, you want out of Schengen? Fine. You will now pay 162 EUR for a single one time entry per person. Thank you very much for your interest.". Or "Oh, you want a 5 year multi entry visa, which EU can grant for like 30-60 EUR? It will be reciprocal 1086 EUR for you. It was a pleasure of doing business with you, sir.".

And do the same with every other renegade, including reciprocal mirror tariffs and stuff. Want to play games? Let's play them together.