Maybe if the Republicans put some thought and effort into it when it was being proposed instead of putting their hands over their ears and shouting LA LA LA! it could have been better from the beginning. They didn't want it to be successful though, because that would have made Obama look good, and you know, the whole, screw the country to make the Democrats look bad stuff.
It wasn't the republicans fault that the ACA was economically flawed. They didn't pass the thing