I’m tired of having this conversation, especially with foreigners, but the US is not going to change it’s form of government. If it ever were to, it would cease to be this country and it would require violent revolution, civil war, or a full invasion and subjugation. It’s not happening without millions dying and full scale economic collapse.
So, don’t tell me what experimental form of government you think we should take. It’s not a theoretical thought experiment for me.