Angus Taylor might have reckoned he and the opposition are in such deep doo-doo that he might as well throw everything at Thursday night’s budget reply. The result was a mixed bag. The promise to index tax brackets is a bold reform that can’t be faulted in principle, although it would come with a big eventual cost and put a financial constraint on a future Coalition government that it might come to regret. The pledge to restrict access to 17 welfare benefits and payments (and the National Disa