The whole meaning of morality is a rule that we ought to obey whether we like it or not. If so, then the idea of creating a morality we like better is incoherent. Moreover, it would seem that until we had created our new morality, we would have no standard by which to criticize God. Since we have not yet created one, the standard by which we judge Him must be the very standard that He gave us. If it is good enough to judge Him by, then why do we need a new one?