The way Congress works now and has worked forever you can't get anything done without backroom deals. Even if you tried to pass Medicare for all, you'd need backroom deals to get it done.
The grass is always greener on the other side. Everything looks shiny from a distance. Try actually doing it and see where it gets you. ACA is our best shot. It took our political system 100 years to produce this. 100 years. To have it struck down by five unelected, partisan men would be a travesty.
No, actually the ACA was our best shot at achieving universal health care while maintaining a predominately private insurance market. With the individual mandate gone, that will leave only one alternative to bring health care costs under control (and they have to be, one way or another): single-payer.
The tea party isn't going to start falling all over itself for socialized medicine if the National Review/Bob Dole plan is struck down. They'll come up with some other bullshyte, or simply oppose universal coverage, period.