prices "on the wall" for all procedures so the consumer can make open choices
I agree with that. The USA is really struggling because of the complex institutional nature of Healthcare subsidies and rules. There is nothing in the ACA that would preclude "prices on the wall" for all procedures. Remember the law is about getting people to buy reasonable quality insurance. It is not dictating the price of anything, but it is giving the individual consumer with more bargaining power, and more information, so that they can make choices that suit them. The insurance companies and hospitals will do anything to hide the real costs to patients, because they will make more money that way. So there will need to be some law that mandates that customers should now the costs up front. Expect the health industry to whine though.
The feds will undoubtedly try to impose price controls
You've spent too much time reading partisan news that is betting on ACA failure, and all the associated wishful thinking. In the "reality based community", the chances of this happening currently very small. I hope you're not too disappointed, but eventually it will sink in.
freedom to shop around worldwide for better drug prices
That would be *hugely* beneficial. Keep in mind that shopping around the world will only have marginal utility unless there is reasonable patent reform. But these guys should get a kick in the pants. The drug companies don't even pay for their R&D any more. They are massively wasteful parasites.
freedom of entry to the field for technical specialists (nurse/practitioners, midwives, et. al.)
So long as they are actually qualified. Problem is that quacks always think they are qualified, and we have the entire morass of the pseudo-health industry. It works because people have ideological blinders. (Think of all the liberal gaia-hypothesis-spiritual-health-quacks.) I believe the government has a role in promoting real science -- which has to be the kind that pursues the truth, and not partisan agendas.