Repealing a tax doesn't involve the opinion of SCOTUS, so I am lost on what you believe. It looks like the SCOTUS is giving Congress an option on a law that only 30% of the people like and 70% think it is wrong, changing it into a tax will make it more vague and more unpopular. It might be best to repeal it and start over.
And start over with what?
With all the babbling and clamoring the Republicans have done, I have not seen a better option.
And I don't even like "Obamacare" but until the Republicans can find a better option that is plausible, realistic with a guaranteed way to fund it, I'm all for "Obamacare" aka the best we can get.
The before Obama system worked, I'm not seeing the Obama system controlling, keeping costs down or improving a thing.