Single-payer system where one can purchase additional private coverage for cosmetic/unnecessary procedures.
The primary purpose of this would be to remove the negotiation of drug costs from a private insurer who has a profit incentive to a national actor that (on paper) is directly accountable to the public. When a private insurer is negotiating with a private hospital, both parties have an incentive to charge the highest possible price to a consumer as they are focused on covering their costs. That is fine in a service industry such as construction or entertainment ; In the former the end-consumer (be it a casino, energy company, etc.) has the bargaining power and/or capital to adequately supply funds, in the latter the product is elastic, and therefore the "invisible hand" is more applicable. Nobody is dying or going bankrupt because Dead and Company plus whatever venue they're performing at charges an exorbitant premium at the gate.
However, healthcare has such a degree of inelasticity that the B2B transaction cannot take precedent over the B2C. Ergo, a system similar to Japan's Drug Pricing Standard with
specific criteria on the innovation and usefulness of a drug is worth exploring.
Of course, the question then becomes what is a necessary procedure? This requires a national health agency composed of leading medical professionals, hospital administrators, and seasoned public health officials who understand the statistics/effectiveness of a given procedure's/treatment plan's improvement of quality-of-life, average costs, etc.
Can such a system flourish without a degree of regulatory capture? How would a nation with an existing insurance industry handle the economic transition to a full single-payer system? The floor is open for solutions.