Should we institute a policy of public humiliation for rich people?
It would work like this: set a ceiling, say $10M, for an individual's net-worth. Once it goes beyond that, the individual can either get rid of some of it, or choose to face public ridicule, forcing us all to decide if the wealth is “worth it”.
In some sense, the super-rich get this kind of pummeling anyway. The amount of money that the rich spend on trying to be “not bothered”, getting security systems, personal assistants, fending off cold-calls from salivating private money managers, it's all exhausting.