I really think this year world's are going to be really interesting as it isn't clear who going to win.
Ladies
Usually Kim has great season to start off with so does Mao and the season end with Kim beating Mao at the GPF and Mao beating Kim at worlds, but this season it's completely different. I'd be tempted to say Kim, but I'm not really certain.
Joannie's had agreat season, but I think that she may not handle the pressure at worlds.
Men
I'm sure Brian will get a medal, but I'm not sure if it'll be gold. He said that he'll do three quads. Had the old system still been in place I wouldn't doubt it, but with the new system, if Brian isn't feeling confident enough he won't do them and do the kind of performance he done the last 2 years at worlds, i.e, the strict minimum to win (not that it worked last year!).
I think the young skaters such as Jeremy Abbott and Patrick Chan have a chance because their skating fits perfectly with the new system. The question is, will Patrick be mentally strong enough to go out and get that gold medal?