I like the idea of voting quadratically with money. Every vote scales with cost. Instead of hiding the reality, just expose it and limit it with quadratic scaling.
And people with no disposable income get zero representation, and aren't even worth pandering lip service.
Doesn't sound sustainable, but it's an interesting idea to play with. You could adjust the price-point to make it more or less price-competitive with lobbying and conventional bribery, and to serve as a sort of tax. Might make for a good cyberpunk setting.
