I am far from an expert in the practical aspects of calculating wealth, but seems doable by the fact that wealth tax exists in countries today.

I too think it would be nice to tax capital gains higher than labour, but I am unsure how it would impact pension savers - both those who save by owning a home and those who invest in equities and bonds. I think I could only accept a very high capital gains tax if state funded retirement would cover full costs of living in cities, and reasonable lower bounds on retirement age. But this seems impossible with large shares of private ownership of homes in cities - they would likely be able to charge exorbitant prices for living if every old person had a comfortable pension. So I guess we shouldn’t have private ownership of homes. But I dunno.

Speaking of a one time wealth tax, would a 100% inheritance tax accomplish what you want? Just curious about how you see the redistribution of wealth happening, as I am myself unsure how it should happen in practice.

When you say we don’t need the rich, do you mean that we don’t need those particular individuals, or that we don’t need them having their wealth? Is getting rid of them achievable by getting rid of their wealth and the means to hoard?