3) A flat tax at 15%
OK, everyone, I admit. Throw this in, and I'll cede EVERYTHING, including single payer (although private health can be allowed), if everything else is allowed.
(Well, most everything; climate change can be front and center but cannot dictate actual policiy).
You see, if they are SERIOUS about the 15% flat rate for everyone, INCLUDING gazillionaires, then our economic problems are solved. Absolutely, across the board.
Of COURSE, they aren't serious about it, because taxes was never about revenue, but about control. However, if they insist on using this as "negotiation", and it was iron-clad, that would pretty much destroy all their other petty grievances in one fell swoop.