Man, I'm a CPA. I'll freely admit that doesn't make me a tax expert. My days in public accounting were on the audit and advisory floors, and the only times I've really used my tax knowledge was to do my own taxes every spring. Still, I'd say I have a better grasp on the tax system than 99.9% of the population. You telling me that I can't comprehend CapFriendly's oversimplified and dumbed down tax calculator is an absolute joke. That calculator exists for people like you, who don't understand taxes. It's a ballpark, shot in the dark. It can NOT accurately predict actual tax liabilities because it has no idea what individuals' actual tax positions are. The disclaimer is literally right there at the top of the page.
And I'm telling you that if some big market team ever wanted to do this (which they don't because CPA firms are pricey and a luxury tax system would be MUCH cheaper overall), they'd get hung up on every deduction, every credit, every piece of the tax code for 32 local governments. And that's before accounting for property tax, sales tax, and cost of living differences, because, why wouldn't you? Again, this wouldn't be a unilateral decision. 32 teams would be trying to gain every inch of ground, fighting over everything. And this would have to happen annually, because all that stuff changes annually.
So yeah, I want you to tell me how you'd get around those issues, because they aren't small, nor do I think they're realistically solvable. As the saying goes, wish in one hand...