SOI has been thin on Ladies, and Sato is only guesting part-time this year. I think there would be room for at least two of the podium finishers in the show. I don't see Slutskaya doing it for more than a year, and she may prefer COI for that year, to sock away some extra cash for her family, and then go home and enjoy family life.
As for Pairs, I don't know how much longer B/S want to perform, and Meno/Sand are new parents. There should be room on SOI for pairs. But of the top teams, the only ones I see retiring after Torino are Shen/Zhao, Petrova/Tikhonov, and Zagorska/Siudek, the latter because with Totmianina/Marinin, Pang/Tong, Zhang/Zhang, and Obertas/Slavnov in the mix, the chances of gaining a medal, let alone a World Championship, are pretty slim. I can't imagine that SOI wouldn't try to get Shen/Zhao, who I think will retire after Torino, at least for a season, but COI might have them locked up. With Zagorska/Siudek training in Canada and gaining popularity in North America, they might be able to slot into CSOI and maybe some of the US tour. If O/S pull off a miracle, then if Moskvina thinks it a good idea to seize the moment, they might retire and tour. Unfortunately, I don't think SOI would ever hire Petrova/Tikhonov, if they podium, which is really too bad, because I think they'd be great show skaters -- their exhibition in Dortmund was fabulous. If Inoue/Baldwin manage to pull of a top six finish -- or a close seventh or eighth -- they might be dark horses for an SOI spot.
I don't see any top Men retiring after Torino, unless Min Zhang gives two great performances to join the top tier or Michael Weiss pulls off a big surprise. And Weiss is already being slotted into SOI this year, so if it works out, he's got to be in. Plushenko has talked about having surgery after Torino, and taking the time to recover. I don't see Joubert, Weir, Lambiel, Lindemann, Li, or Buttle going anywhere immediately after Torino, although who knows if Sandhu would retire at 26 to do SOI or slot in part time like Weiss has.
Dance is a bit more complicated: There's a chance that only Navka/Kostomarov will retire after Torino, and I expect them to win in Moscow and Torino. If they don't compete at Worlds 2006, then I'd expect Denkova/Staviyski to go for gold in Calgary and retire. If N/K compete in Calgary, then I'd expect Den/Sta to go for a World title in Tokyo. Depending how they do over the next few years -- i.e., if they're not passed by younger skaters -- I wouldn't be surprised if Grushina/Goncharov, Dubreuil/Lauzon and Chait/Sakhnovsky were to stick around for Tokyo, particularly if they have a shot at the gold medal, and then retire en masse, leaving Delobel/Schoefelder (29/30 in 2008) and Gregory/Petukhov (27/30 in 2008) as the "old folks" and the kids: Belbin/Agosto, Domnina/Shabalin, Faiella/Scali, Kerrs, Gudina/Beletski, and any upcoming stars from Juniors and Novice.
N/K would get a year on COI, if they want to tour post-retirement, but they might have more fun in SOI, especially if they could do part time and wanted a lighter schedule. Dubreuil/Lauzon might also be candidates for CSOI and SOI, if they wanted to leave Europe. Dance seems to be the lowest on the SOI totem pole, so if they recruited G/G and/or C/S, I wouldn't be completely surprised.
I think it makes good business sense for SOI to test drive skaters. Surely two skaters or teams could split roles in group numbers, and there would be more work for more people and more exposure for more skaters.