I think perhaps polished is suggesting that the names of the judges not be revealed before the event.
At any rate, it doesn't matter all that much who the specific judges are, because there are still a relatively small group of people to choose from.
What polished is really bothered by is the idea that someone might be judged by someone they have taken coaching with.
But concealing who the judges for an event are won't really change that, because the people qualified to be judges have a very high overlap with the people who have the expertise to be the most helpful coaches.
We really only have one set of experts in dancing. In skating they have people who are not competent to coach who are trained specifically to judge, but they judge by the book - they do not necessarily have any personal experience in the activity at all!
If your overwhelming concern is to eliminate anything that could give the appearance of unfairness, and you are willing to risk the judgment of "book experts" with little practical experience, then you like the olympic skating method. But note that it has had many highly publicized accusations of unfair judging!!
If on the other hand you want to be judged by people with hands on expertise in the activity, you prefer the current ballroom method, and accept the risk that many of the competitors will have studied with many of the judges (at the top level, change both instances of "many" to "almost all" - at which point it hardly matters)
One thing rather inconsistent in Polished's position is that he appears in trying to adopt skating's method to want to hand the training of a body of judges without coaching experience (who would be prohibited from coaching) to the IDSF, despite being a frequent critic of some of the more outrageous things the IDSF does as a result of having bureaucrats rather than dancers in charge.
So in the end there's a choice: you can have dancers in charge and risk that they won't be fair, or you can have bureaucrats in charge and risk that they will do ridiculous things out of ignorance. Whichever way is chosen, current experiences in dancing and skating seem to indicate that:
- The people in charge will treat each other in an infantile way
- The more the activity becomes a competition between nations rather than a competition between individuals (couples), the higher the stakes and the greater risk of actual (as opposed to perceived) corruption.