If Plushy is healthy in 2006, his main competition will be Joubert, who IMO is still developing, and has not found his own personality (but might, by 2006). If Tim is healthy, and back to his 3-quads performances, with better artistry (I expect that to happen) it will be too close to call between these three. Plushenko's presence on the ice, and his strong basics may give the gold to him. However, if someone else wins worlds in 2005 (in Moscow, of all the places!) that could change the landscape going into Turin considerably.
In order to be competitive with these three, Johnny will need 2 quads and more expression in his skating. Considering how quickly he has developed into a national champion, it is not an impossibility, but he will need a lot of help- mistakes by the top 3. Afterall in 1994, who could have predicted a Urmanov-Stojko-Candeloro podium? Anything can happen. It is just that it (Johnny winning gold) is a low probability event, like Sarah's in 2002.
A few other skaters to consider:
I expect Lambiel to become a real force, if he can land 2 quads (even one) consistently in competitions. I would hold off my opinion of Lindeman until I see him give a stellar performance at a neutral site. I love Klimkin, but it is so rare to see him skate a nearly clean performance (with a quad combo)! Unless he is free of injuries, and makes great strides with a new coach, I don't see him in this mix. That is sad because I would really love to see him realize his potential. He may be another Sasha Abt, who is always brought down by bad luck.
Sandhu could be the Paul Wylie of the 2006 games. If he continues to have a Jekyll-Hyde personality in his skating, it will be tough to predict where he will end up- top or middle (not the bottom though). I still doubt that he will win the gold, unless there are injuries to 2 of the top 3 skaters. In fact injuries have not made that big a difference for Plushenko this year at least.
I expect Lysacek to be at nearly same level as Johnny by 2006. Somehow I don't get the same feeling about Griazev, and I am not sure why. In any case I think these 3 will be around in 2010, along with a few others, with Johnny leading the way.
Vash