No system is perfect for the simple reason that various countries have different peaks in different disciplines.... Ice dance is so strong right now in the USA... but that doesn't mean we should change the rules right? because it wasn't always that strong... I find the system to be working most of the times honestly.
Yes, I am fine with the system. It is a bit short-sighted when it comes to injuries and junior athletes moving up, but it is fair. Better, I think, than the previous system of three spots per medal--as often those weren't necessarily a sign of depth.
I simply think it is important to be clear about
why I think the system is fine. I think the system is fine because it provides for the possibility of the three best athletes in the World to earn medals. And to me, ultimately, Worlds demands two things. 1. It must include athletes that represent the World. The Grand Prix Final is a lesser event, IMO, precisely because of the far more limited field. And 2. Worlds reflects the best athletes in the World. That does not happen in gymnastics today, where the third highest qualifier is cut if he/she is from the same team. I want to see diversity on the podium as much as anyone, but short-circuiting the chance of one of the top three is not my view of how to get it.
Having said all that, we can look at the field for specific seasons and see examples of serious issues for specific seasons:
-Satoko will be out. Marin Honda is one of the best juniors in the World. Mao has also faced injury this season. It's plausible that Japan could have three medal contenders next year, and not get them because two of their best hopes are unable to compete at Worlds this season.
-China had three of the best teams in the World in 2014. Sui & Han stayed home as the result of two injuries (theirs & Pang & Tong's the year before). S&H won 4CCs in 2014 with one of the highest pairs scores of the year.
So there are flaws, and sometimes the repercussions hurt the sport. I think it is OK to point them out--to mourn the absence of a Grand Prix Final qualifying team like Peng & Jin. To even mourn the absence of athletes like Samohin and Hurtado & Diaz.
It's just that--as I believe was the heart of your post--it's not a grave injustice that those athletes can't be there. More a reality of sport. A system that does its best but cannot account for every possibility.
I believe ice dance has a chance of developing in Asia. But it won't happen by reducing the quality of skating required to reach the top. It may happen by . . . 1. Having the Olympics in Asia twice in a row, 2. Having younger Asian athletes see Asian teams and athletes of Asian decent rise within the discipline (the shattering of the last glass ceiling of sorts), 3. Quality dance coaching for Asian athletes at a younger age.
The third is the most important and the hardest to accomplish. Italy and France have young coaches training with top coaches in different countries in the hope of improving their own programs back home. I would like to see China & Korea consider that path. Perhaps the young team of Lee & Kam may be able to generate momentum for Korean ice dance. Perhaps one of the international partners--like Gamelin or Minov--may help raise the quality or profile of skating in Asia, similar to the ways that Tchernyshev and Tanith Belbin have helped raise it in the United States. The top Chinese dance teams have been training with top coaches for many years. Perhaps some of that knowledge can help. In Japan, I think limited space on the ice is a serious issue, limiting most initial training to singles. But one step at a time. Perhaps, the next young talent will watch the Olympics and not dream of becoming Mao, but of becoming Maia.