There could be hypothetical imperatives, but these are only hypothetically binding. This is usually dissatisfying for moral realists.
Yeah, and in the absence of proof for the existence a God, God´s alleged imperatives are also in the category "hypothetical".
Because the creator has total authority over his creation.
Says who?
His laws tell us how creation works best.
How exactly am I morally obliged to help creation "work best"?
When the laws are transgressed then creation breaks down and life is destroyed.
Ok, I guess I am going to borrow from your previous argument ("Why does causing pain to others oblige me to stop causing pain to others? What if I like causing pain to others? What if this is my goal?"):
Why does destroying life oblige me to stop destryoing life? What if I like destroying life? What if this is my goal?"
So they are categorically binding - you really are obliged to obey him because you owe him your very existence.
Doesn´t follow.
But they're also hypothetically binding - if you want to live and flourish in his world then you ought to obey him.
If I want to live and flourish in this world I need to look at how the world works - no matter whether and by whom it has been created.
I'm not sure what you're asking here. Could you rephrase?
Well, I´ll try:
For you (if I understand you correctly - but otherwise you whole line of reasoning doesn´t make any sense) the only way for there to be an "ought" is the command of a personal authority. (I do not agree with this authoritarean view on things anyway, but let´s just put this aside for a moment). And, of course, for such an authority-oriented person like you the most powerful entity is the greatest authority. If a God exists, God would be more powerful than anything in Its creation - so God would be the Highest Authority. However, in the absence of a God, you would have to go with the Highest Authority available in that reality: This authority would be the one to determine authoritative "oughts".
God, by definition, is the supreme being, the creator and source of all other things. So the concept of a METAGOD doesn't really work.
METAGOD, by definition, is the entity that created God. Thus, it´s defined as a Higher Authority than God. In the absence of a METAGOD God would only be a lesser authority.
So much for defining entities into existence in order to establish a "either it exists or there can be no 'ought' or morality at all. If you can do it, I can do it.
And then there will be next guy who postulates a SUPERMETAGOD.
