I also think agency was the big issue. God felt that for his spirit children to grow and be more like him, we had to have choices , and agency to make those choices. You don't grow if you cannot make mistakes. And you cannot make mistakes if you have no choices, for better or for worse. Satan thought this was a stupid plan. He knew that if Man had agency, then many would make the wrong choices and be destroyed. So he proposed that he would prevent that by removing agency and personally hand holding us all so we could not make any mistakes, or commit any sin. In the end, Satan wanted to have all the Glory and be God to us all (It doesn't take much to figure out what it would be like to have Satan as your god). But when God rejected that plan, Satan adopted an attitude. He decided that he would show God a thing or two. He would demonstrate the folly of agency. He is doing that today by deceitfully leading people to make bad choices. But God defeated his plan by sending a Savior so that man could repent and be saved by the blood of the innocent lamb of God. We use our agency to choose Jesus. Satan wants us to use our agency to reject Jesus. Jesus represent the acceptance of Gods plan. Satan represents the rejection of Gods plan. Agency is the means of doing so. In doing so, God is pruning the vineyards.
