I would like to see some billing revisions take place and make the majority of collections susceptible to review. Also, limit the rates that a facility can charge limited to no more than a 20% variance. Of course now that insurance companies don't act with a fiduciary responsibility, this also needs to change. Obamacare, as well intended as it is/was, has introduced some fierce unintended consequences.
As someone who was saddled with a $138k set of bills (after insurance, before Obamacare), it's rough. I make decent money and still had to spend the better part of a decade working 60-70 hour weeks with a day job and side work to pay it off. If they made medical debt a tax credit, it isn't even a deduction most of the time, I'd bet there'd be more interest in actually adjusting the course.
I would like to see the collective coverage for Medicare, Medicaid, VA Medical, and Federal Employee coverage combined into a non-profit medical insurance anyone can get a policy from with a single policy that can and does negotiate with fiduciary responsibility. Of course, then the congress would handcuff such an organization and make it unable to wield its' negotiating ability.