First of Manny, you are right about Tony being the man. He was such a bad ass in season 4. He will be important in this season I think.
You said there needs to be a spy in CTU. I know who it is. It HAS to be the guy Chloe is seeing at CTU. She is a nutcase. Why else would he want to be with her other than to get info and ? He is working for the terrorists.
And this whole not-signing-the-treaty this is just a diversion that the Terrorists are using (Similar to season's 4 train bombing).
The only thing I REALLY WANT TO KNOW is who, out of Jack, Mic e, Palmer, Chloe, or Tony told someone about Jack being alive. My bet is Palmer. That is why he looked guilty before his death.
The real focus of the show is the terrorists killing those who knew about Jack to draw Jack out into the public eye. I think the terrorists plan on using Jack for something. Is Kim Bauer, Jack's daughter, in season 5? If so, she will be kidknapped without a doubt.
Thoughts anyone? Give me your ideas!