That is like saying "Okay, lets give ISIS the United States and maybe they will be good". No, Satan would just be even more powerful, and it is also against the nature of God to be Evil. God is the only example of right and wrong, because he is the perfect being.
Yes, but the title of the debate is: "if satan and god switched power, would satan still be the evil one?" We are not saying that satan has become god, rather that he has obtained the power of God. If satan became god, then he could not be satan, rather God would become a weaker "god". It is against God's nature to be evil like I said earlier, so he could not be satan. Satan may acquire Gods power, but God would keep his power that He already has and not acquire the power that satan has.