If Supremes strike down any or all of Obamacare it will be a mess but the 2700 page law is an even bigger more unaffordable mess which did nothing to address the main problem. Excessive Costs.
Rebubs have introduced alternatives but none I have seen come close to working out the issues of Medicare insolvency, fraud, waste, over use, cost shifting, premiums too high to afford, bad outcomes, etc... etc....