Agreed.
Also agree about the corps comment. However, if we put that many troops in Kuwait, my guess is that they would be "influencing" Saudi Arabia as much as Iraq. They would also help keep our "friends" in the UAE, et al, from panicking, and discourage Iran from anything rash.
My guess is that the actual ground attack on Iraq will be based in Turkey. The logistics are less vulnerable to attack from the surrounding nations.
Any ground ops we do in Iraq using Turkish bases, as opposed to Turkish ground ops, would almost certainly be airmobile. Mechanized ground power would come out of Kuwait.