Somehow, I feel that while designing this whole thing, no one seriously looked at how miserable the Massachusetts plan is. Only Democrats think it's working (a majority of Republicans and Independents think it's not). That doesn't bode well for what the national opinion of the Massachusetts model would be.
What is miserable about the Massachusetts plan?
A majority of Republicans would oppose it on ideological grounds alone, and I'd guess that a very large majority of both Republicans and Independents in Massachusetts already have health insurance through their employers so didn't stand to be beneficiaries of the program anyway.
If it were seriously unpopular, wouldn't Cahill or Baker be running on its repeal?