Indeed, it would be wonderful. But to me there are two very big differences between Iraq and Afghanistan. Weapons of mass destruction, and missiles that can reach Israel. Hopefully some of those troops willing to turn on Saddam Insane will be the ones in charge of those awful weapons.
I don't think we intend to leave Israel out to dry and I'm sure Israel will be active in its own defense when we go into Iraq.
I have heard discussion that we may be able to jam Iraq's radar to the degree that they can't effectively launch missiles.
Nonetheless, Israel's small size and numerous enemies make one worry.
I would be interested to see what sort of hell Israel would unleash on Iraq if hit with potent nonconventional weapons.