Very interesting analysis. Thanks, pangtongfan. I'd add that in 1999–2002, Sasha was becoming very promising, at least in the last two years of that quad. She had all her strengths in place, though her weaknesses (mostly inconsistency in the long program and her edges) were also apparent. Remember, though, that she came in fourth in the 2002 Olympics and was in a medal position after that wonderful short program to "Sentimental Waltz." (Perhaps my favorite of her programs.) Not too bad for a headcase.
Sasha in addition to consistency, needed to build up her reputation at that point (which she would have gotten more of had she done better at Junior Worlds and gone to the 2000 Worlds, or not been injured and maybe gone to the 2001 Worlds), and her choreography and basic skating were nowhere near as strong then as they would become. Her Carmen LP at the Olympics for instance, while nice in many respects, had tons of just basic stroking between elements, which is something in later years you would never see from her, as she developed very strong choreography minus the blip she was with Wagner. Her edges, flow, and speed while never her forte, also improved greatly in future years. Her greatest strengths were mostly already in evidence though, and that would make her a huge force over the next quad. Cohen really should have been the skater of the 03-06 quad as she should have won Nationals 2-4 times, rather than just 1, and probably about 2 of the Worlds that quad, but she unfortunately couldnt peak at the right times.
I agree with a lot of what you wrote but I think we should take into account the quality of the skating more, and not just the depth of the field which is what you appear to emphasize. For example, I would not have ranked 1993-1994 so high, as I found the quality of skating rather lacking in that era even if the field was deep. Chen and Szewczenko were relatively immature, Kerrigan was a lackluster and stiff skater, Bonaly was seriously lacking in so many ways, Harding was not at her peak, etc.
The skating of Chen, Kwan, and Lipinski in the 1995-1998 period from a quality perspective was just so much better than 1993-4 in so many ways. The programs and performances from this period--Salome, Rachmaninoff Piano Concerto No. 2, Lyra Angelica, etc...these are all classic programs and are still considered to be some of the best ever.