Longoria will be in AAA by Midsummer as will Reid. I think Evan will move to 2B with Aki staying at 3B. Aki is one of the best defenders i have ever seen.
I think if anybody moves it will be Iwamura and not Longoria. Longoria's defensive skill set, while not Rolen high, is very good to go along with his offensive skill. Unless Baldelli is moved for a MLB ready pitcher, I think we see Iwamura as the ultimate utility man as early as next April.