I still think property taxes on stocks should be a thing. Americans pay income taxes from foreign sources, so why shouldn’t the rich also pay the same for overseas investments? Just close the loopholes with simpler tax laws. That could be like saying it isn’t hard to program some feature into software, though, so perhaps not.

Example: “Thou shalt pay 0% of all income and assets up to 20k, 10% to 50k, …, and 95% on up to 20mm.”