Obamacare, when passed using reconciliation had nothing but the spending and taxing included, everything else came after the bill was passed and signed into law. There were 10,000 pages of rules and regulations none of which can be addressed in the Republican bill because they are using the reconciliation process. There was zero possibility of passing any new and complete healthcare reform bill using regular procedure, because Democrats would never agree to starting over and creating a truly bipartisan reform bill as long as Obamacare existed.
Bottom line a 2000 page bill and another 10,000 pages of rules and regulations can't just be tweaked or fixed, not if you actually want to call it bipartisan. But then again Democrats don't care about bipartisanship and that is why Trump is President and Republicans control both houses of Congress.