The health care industry isn't going to like Donald Trump. They never asked for the Individual Mandate to be repealed. He should think about that. What next impeach John Roberts?
The CEOs of hospital systems and health care insurance companies will have to come forward to recommend improvements to the ACA. That is done through committee hearings. The Republicans have to do the work and they don't want to because they don't know what they are doing.
Trump can''t simply sit in the Oval Office and write Executive Orders. It doesn't work that way.
IT DOESN'T WORK THAT WAY!!!!!!!!!!!!!!
Congress would love to have it work that way, but, it would have to destroy the democracy and let's face it, everyone in Congress and the Executive Branch already vowed to uphold and defend the USA Constitution.