The parliamentary budget office is inherently a hybrid. It cannot attach to a committee, and it's not a completely independent organization along the lines of the national budget office in Korea or the Congressional Budget Office in the United States.
I do think the Parliamentary Budget Officer should be doing more routine work for Parliament. I want to stress what I mean by this. I have a sense, which may be misplaced, that one of the issues is that the Parliamentary Budget Officer is put in a position of reporting only when troubles arise: when the government seems to be acting in an uninformed manner, where the numbers don't add up, so to speak.
I think it would be helpful for the Parliamentary Budget Officer to routinely report to Parliament its advice on the macroeconomic condition; various other economic variables that affect the budget, like prices and unemployment and interest rates; and projections of future revenue and expenditure. These come to mind as examples where the PBO would not be in a situation only of second-guessing the government, but rather also providing ongoing essential advice and data for Parliament.