Rich people consume a lot more, so a consumption tax would be ideal if you eased other tax categories like income tax and/or capital gains. It's easy to administer and would boost investment across the economy IMO.
Well, government spending could go down along with that too. Obviously, that ain't happening with Republicans (see: the OBBB and failed DOGE project) but in theory you could do major reform and craft coherent policy while not triple dipping tax-wise. I think you could implement quite a high consumption tax model and be okay -- you'd have the added benefit of very simple collection and enforcement since it's all at the tail end.
