There is fairly strong consensus amongst economists that the idea taxation scheme for government is
relatively high income taxes and relatively low corporate taxes.
This is my plan as well - although it has a catch.
1: I'd probably cap the tax at 50%, and I desire a constitutional amendment to prohibit anything higher except in times of extreme national crisis. But that is my initial assessment, and I view it as a flat tax. Last time I looked at the subject of brackets for high income, there simply was not enough money there to offset reductions on the lower brackets.
I'd love to reexamine the issue with better numbers for how many people / how much wealth is in each bracket. But we need enough in taxation to fund a considerable expansion of our budget / safety net.
2: As automation expands, there will be fewer workers and more corporate wealth. Therefore, income taxes will do nothing to help us in the future. Taxes are necessarily derived from productivity, a reflection of our GDP. It just happens to be that our consumers are almost all workers today, that will largely not be true "tomorrow". So there must be a plan to sustain taxation without income being involved.
Sorry, but we have no choice but to pursue corporate taxes in the future. We must be prepared to enact that changeover as quickly as automation takes jobs. Any delay would cripple our budget / safety net. We need to learn how to deal with their potential flight to avoid our laws and our taxation. They still want to do business with America, we have the leverage we need to ensure they don't get to do it for "free". They pay workers today, tomorrow they can pay the government who - in turn - will give it to the "workers" tomorrow.
The basic concept is thus: When workers are replaced by robots, income taxes are replaced by corporate taxes.