Why call the being God if it has no authority, power, and responsibility toward humans? That being would be entirely meaningless to anyone alive if it had no relationship to humans.
Why would God have responsibilities towards humans? God is not a human parent who is responsible for his children.
Why would God be meaningless unless God had a relationship to humans? You must think humans are pretty important.
Ultimate power, otoh, if moral toward other life necessitates total responsibility in using any ultimate power. If ultimate power is never wielded then Godhood is moot. Not an issue.
So you would not want God to withhold the power he has to eliminate all of creation in one instant?
To be a God is to be in authority and actively involved in the lives of those who owe responsibility to that God in a just way.
God is in authority but God is not responsible to be actively involved in our lives.
Whatever we get from God is from grace alone, not because God owes us anything.
Power and authority are not the same thing. Authority is about just and true responsibility. Power can be used to rule in a malevolent way, and without any moral consideration nor any regard for anyone's well being.
Who decides what is just or good, us or God?
I can't imagine calling any being God if there's no proof, nor evidence of authority, and responsible relationship toward humans. If ultimate power alone is the requirement to be God, then I would never give credence to such a God.
No, there is no proof, but there is evidence that God cares about humans, the Messengers He sends, but that is not because God is responsible to send them, it is only by the grace of God that He sends them.
It is not as if God is going to a job interview in order to qualify to be God. God does not need to meet requirements in order to be God. God is what God is.
That said, I understand your point. God is not only all-powerful, that is only one of many of God's attributes.
As it is Omni Gods are imaginary. And I've never met a genuine God, nor have I heard any truth of one.
And you never will meet God, none of us ever will.
The sole purpose of morality is to make life worth living, and to form relationships on the basis of deserve, and trustworthiness. An immoral God is not a God at all. And having no responsibility to others isn't worth any reverence.
The sole purpose of morality is to make life worth living, and to form relationships on the basis of deserve, and trustworthiness, but that only applies to humans, not to God. God is not subject to being moral because God is not a human that has a character and behaviors. God simply is what God is. Humans have responsibilities towards other humans but God is not responsible or accountable to humans.
You talk about God as if God was a human. That can never work because God is not a human with human character traits and behaviors. God has a mind but God's mind is not like a human mind. God has a will that causes things to happen but God has no behaviors.