Tell that to Tojo. It was a queer arraignment to be sure. Kind of a dictator with an Emperor kind of over him.
A Hashemite king? Isn't the Jordanian king a Hashemite? Now that's something the US could offer the Jordanian King in return for his cooperation in a war against Iraq. Perhaps they could even give the Palestinian Arabs their own state in part of the current Jordan, in a swap for most of Iraq. Now that's quite a deal for Jordan's King!
Yes, the current Jordanian king is Hashemite. They have instant legitimacy throughout the region. A US-installed Hashemite king wouldn't be seen as a US-lackey. The Palies wanted to form a state within Jordan some time ago, but then-King Hussein put an end to that pretty quick.
Any democracy attempt in Iraq will just take forever to implement and will likely be rejected like a transplanted heart of the wrong blood type.