Joe, IMHO, Irina will win the World title in 2005, and if she's healthy, she stands a good chance to win at Torino. The judges love her - always have, always will. I recently watched my videotape of the 2002 Olympic long program, and several of the judges awarded Irina 5.9 for technical merit, despite the fact that she did not land any 3/3 combinations, and she fell out of her triple flip. Clearly, they were ready to crown her Olympic champion. If Irina skates cleanly, she's going to win, regardless of what anybody else does. IMHO!
Michelle Kwan has reached a plateau at this point. Granted, it's a majestic, wonderful plateau, but I do not see any improvement or anything new in her skating. Her "Bolero" program still needs a lot of work in order to win high points from the judges. While I expect to see Michelle on the podium at Worlds and at the Olympics, I expect to see her win silver or bronze, not gold.
Sasha Cohen, to me, is a skater who just doesn't have the competitive drive and/or the confidence to go out there and nail her programs. Frankly, I think her jumping technique has declined, not improved, during the past three years. And then there's the issue with her recurring back injury. In my view, it's doubtful that she'll win a medal at Worlds or the Olympics.
Shizuka skated the performance of her life to win Worlds this year, but that may have been the best competitive performance she'll ever turn in. Perhaps she's feeling the weight of the World title, and she's nervous about defending her title. Can she defend her title? Absolutely. Will she - who knows? I think she's a beautiful skater, and I hope she medals, at the very least.