Getting rid of the mandates in particular. And the federalism it invokes!
That's the selling point to me. There seems to be no political will to repeal Obamacare and the current Federal leviathan. I don't expect it to happen. Any solution that has come about simply shuffles the chairs but keeps the FedGov bureaucracy in place.
While this bill keeps many of the rules, it shifts the administration to the states. States for the most part seem to have more efficient bureaucracies than the Feds, and are closer to the customers that they serve.
But most importantly is that politically it now puts the Governors and State legislatures into the game, and at odds with their respective state's congressional officials, as they have to make this work for their consitutuents. State officials are far closer to the public, and by extension that allows for greater ability for citizens to apply pressure to have a set of rules that function.
So if I'm going to be stuck with something at the Federal or State level, I'll take the state and try to make it better over time.