Talking about judging, there's a youtube channel of a russian ISU judge, I found it really really interesting.
He talks about how they evaluate programs and different aspects of scoring of skaters. It is more a channel for skaters and coaches rather than fans, since he gives analysis and advice on how to construct programs to earn higher PCS. So good thing for skaters and coaches to follow his channel probably
The main thing he points out, that the core thing is PCS is 'USE', aka whether or not skater demonstrates their skills in a program, meaning a skater can possess skills, but if they're not well demonstrated in a program, a judge can't count them towards their PCS. For example, he suggests using different turns and steps right from the first second, this way judges immediately register some parts towards SS mark (compared to it being demonstrated later in the program), and SS mark can become higher. I also found it interesting, that what they do is essentially make an average of all different SS areas to calculate PCS, i.e. he would credit Surya for her speed, but not in edges, then make an average of those scores.
Nothing we didn't know or guess, but still interesting to hear some very specific advice on how to increase scores.