I was also pleased about how Kristi maintained her skills. She was a wonderful pro, actually increasing her skating quality as time went on. She really had the ideal career arc, both as an amateur and as a pro.
As for Michelle and Irina, they both spoiled us, didn't they? We were able to watch two superb skaters grow and mature artistically instead of just getting a glimpse of talent that never developed, as was the case with Oksana, Tara, and Sarah. The latter three showed up, won the Olympics, and then never advanced or smoothed out their skills. This was especially a loss in the case of Oksana, who seems to be generally thought of as the most talented of the three. She did continue in pro skating but was not disciplined about her training (and had other problems besides). So her early appearance turned out to be her peak. Thank goodness for Michelle and Irina!
By the way, thanks so much, renycpr, for providing this wonderful video list! What a great resource, and I know it took a lot of work and time.