Liberals are not submitting a bill to tHe CBo. So what liberal assumptions are you afraid of being scored inaccurately?
Nobody can predict %100 accurately all of the variables of the bill: How many people sign up, medical inflation, unemployment, etc.... but the CBO is better than anyone else. The Republican bill keeps Obamacare's most expensive provision for pre-existing conditions but has removed the payment mechanism for it. If you are the fiscal-hawk that you pretend to be then you would demand Republicans explain how they reconcile their bill.
Nobody can predict %100 accurately all of the variables of the bill: How many people sign up, medical inflation, unemployment, etc.... but the CBO is better than anyone else. The Republican bill keeps Obamacare's most expensive provision for pre-existing conditions but has removed the payment mechanism for it. If you are the fiscal-hawk that you pretend to be then you would demand Republicans explain how they reconcile their bill.