"In terms of Iran ... Shariah Law has to go as being part of the government ... And this is the view of all the Iranians I have ever met"
Do your Iranian friends think Sharia law will ever go, as long as Mullahs rule Iran?
Have you asked them if they think Iran is building the Bomb?
So, you think if all Iran sanctions are removed , they will be so grateful to the USA that they will support continuing to use the US Dollar for international oil trading?
Your ideas about changing America are worth debating. IMO.