As the bill currently makes its way trough committee, there are 4 scenarios that could happen to this bill. Starting from the left extreme, to the status quo.
1. Universal Health Care
This is Obama's home run folks. Also, the worst of the worst from a conservative standpoint. The government hires, pays, and fires doctors and all medical professionals, to the exclusion of any private investment or competing businesses.
2. National Health Insurance
Probably the very most the democrat leadership can accomplish realistically. With or without the republicans. Even then it would be watered-down with politi-speak that would favor health insurance companies(or, at least just the big-corrupt companies).
3. General Health Reform
No more than your general bill that passes through congress to do...something...In the end, nothing to worry about, just your average waste of money.
Waterloo. No further explanation needed.