I have to go with "no freakin' clue", because the way politics have degraded in this country... I cannot expect rationality to magically show up at this point in time.
They'll uphold some parts and strike down other parts. That's what the Supreme Court has been doing lately. The Mandate is obviously wrong and Unconstitutional, so it will likely go. But some parts will be upheld. Personally, i would like to see the whole thing struck down. But that won't happen. Our Supreme Court has become erratic and unreliable in recent years.