Once enacted, the ideal of repealing Obamacare in its entirety, no matter how appealing, is a herculean task to remove it all together. Something I don’t think any President could do by himself now.
Given that, there are things that could make things more palatable. Getting rid of no-coverage fines, for one. Getting rid of government coverage minimums would be another. Opening up health insurance options for Americans to ANY state, Group or other interest plan would be another. Lastly, putting reporting and recording restrictions on doctors and hospitals could also be altered or removed.
That would be like removing cancer once it has metastasized throughout your body.