Completely support a 'Brexit tax' obviously it wouldn't give us our rights back but the people who voted for it should be held to account.
The idea is that it's an optional sign up with HMRC for confessed Brexit supporters. And if not enough of them opt to pay it (i.e. over 50% of the electorate) then it's safe to presume that they didn't really mean they were happy to be poorer, they meant they were happy to make other people poorer to fund their xenophobic dreams. And therefore they cannot be taken seriously and should be ignored and we should rejoin the single market and customs union as fast as possible.
So worst case scenario the rest of us at least get compensated financially for the economic hit. Although I agree that the other damage they have done on top is immeasurable and this won't fix it, at all. But in all likelihood the spineless gits would not sign up, the number doing so would be maybe 5% of hardcore nutters not 50%, and therefore at least we can repair some of the economic and other damage by pursuing sensible policies again, having proved that these people never had any serious intention to own their decision in the first place.