The only thing they could have come up with that would have been better would be single payer. They wouldn't do it during the Obama administration because that would have made Obama look good. Idjits! If they'd come up with something better, they could have flipped that in 2012 into showing real leadership, and possibly gotten Romney elected (although Obamacare and Romney care were pretty much the same thing)
The GOP has painted themselves into a corner now, because the only thing that they can offer that's better than Obamacare is single payer. And their corporate sponsors don't want anything to do with that.