I think that a completely reworked economy, can make it much easier to tax the wealthy. Specifically, by using fixed incomes according to job rank, and having leadership roles change pay grade according to what workers vote for. Each worker can vote for who holds a leadership position, alongside their job ranking.

As to the fixed incomes, by having all job types assigned a rank with a fixed income throughout the entire nation, that prevents leadership from coercing changes in worker pay. They can’t underpay, nor overpay the workers, which makes it easier to assess and collect taxes. If everyone falls into very specific tax obligations, it is harder to game the system.

Alongside UBI, universal benefits such as guaranteed shelter, food, transport, utilities, and healthcare, money becomes optional. This allows workers to not be blackmailed into working for bad employers, which also puts a stick in the wheels of the wealthy. Coercion is the great power the elite uses to abuse ordinary people, so we need to eliminate that.

Also, absolute caps on wealth and assets, both for individuals and corporations. No one should be able to hoard resources that would allow any single entity to manipulate society. Sure, it would suck if someone can’t have dozens of vacation homes and yachts, but realistically, most folks won’t need more than one vacation spot with a nice boat.