I've noticed, among rank and file Republicans at least, a slight opening for single-payer. People who chanted "no to socialism" eight years ago suddenly are intrigued by the idea. I know one Trump voter who frequently praises Hugo Chavez for nationalizing the oil and selling it ten cents a dollar.
Of course I don't want nationalized oil and I don't want single payer if a millionaire can't get the same right to healthcare as a pauper, but if you can make single-payer purely about healthcare and not about wealth redistribution than in a few decades it should have broad bipartisan support. We're on our way!
The ACA is not working & isn't a long term solution, the costs will further escalate with monopolies in many states. I saw your earlier post about Single Payer too. There are a couple of problems with your revenue generation mechanism - Indirect taxes would go too high on everything & in general that would disincentivize sales/purchases which is why I prefer tax on profit. Secondly it is going disproportionately (as % of income) hurt low income people who are already struggling & this will be unpopular. It is also difficult to justify say a national 20% odd Sales Tax for healthcare etc.
Among the other options you have - Part funding through federal income tax increases & payroll tax increases (Bernie proposal). Now federal income taxes on very wealthy have to go up because other-wise payroll tax increases are way too high - Bernie had like 6%+ for payroll, you can't go with an increase of payroll taxes by 15-20% etc.
If you combine all ideas for revenue generation the solution is -> A combination of Sales Tax of 5-6%, Federal Income tax increases on 250K+, Payroll tax increases 4-5% etc. But anyways I think any such arrangement will derive scorn from both the left & the right & you try to appease the right & 0 people voted for the ACA anyways so I don't see this as a winning strategy. I don't see any solution to placate all sides, but it will be much less costlier than the ACA !