I still think that we will find "something" even if nothing is there. There are way too many CIA spooks running around there for us not to at least plant something.
Also it isn't like finding regular arms. They knew these things were banned, so they did everything they could to hide and misrepresent them. So it could be a while before we do find anything.
And finally on Saddam, that is an interesting question with all kinds of possibilities. If Saddam lost control of the country on the first night of bombing it explains a lot. It would tell us why the Iraqi resistance was so poor, disorganized, and so quick to quit. The problem with having a dictator is you can only get orders from him, and if he isn't around to give orders, nothing gets done.
If Saddam did survive, he probably got a bad review of the war from his yes men, and by the time he realized that it was going so badly it could have been too late, as communications were utterly disrupted by the US attacks.