Would you be okay with U.S. being a parliamentary system?

[Blue3]

I would prefer to start with the States adopting a unicameral parliamentary model.

And I like the idea of the head of government still being confirmed by the people in a referendum... that the parliament/legislature selects a person to lead the government, but the people then still have to go out to vote to confirm that person with  50%+1 of the general population vote.