The government doesn't set prices for procedures. The fed could extend the medicare pricing list to everyone instead of having to deal with each insurance company's "negotiated pricing" and arcane "most favored nation" contract rules. Or maybe employers could be required to offer up the cash that would have been spent on the company health plan so you can shop for yourself. Shopping for insurance across state lines would certainly be nice! Also, repealing state regulations that limit the size/capacity of hospitals.
My HSA should stay that way, if it's my money, no one should be able to take it but me!
There are lots of political problems that could be fixed without repealing the ACA. 99% of it is removing greed, the #1 killer in America.