That's not backwards.  It's a clean slate (with a 2-year expiration window).  We all know that no bipartisan solution will even take place while Obamacare remains the law.  Dems would never give a single vote to it, just as R's didn't give a vote to Obamacare in the first place. 

Clean the slate and start over.  Why do you think budget deals usually only happen at the last minute?  Because it's the only time there's enough pressure on BOTH sides to compromise and work something out.  As long as Obamacare remains the law, D's don't have that pressure.