Artur may need a sports psychologist. I don't know if he can ever recover mentally. I hope he does because he is so talented. I don't see how anyone can blame Mishin for his problems.
Liza simply needs time to adjust to her new body. She is not the only compactly built skater. Slutskaya, Ito, Harding did not have lithe bodies and they used their power to their advantage, and Liza can do that, given enough time. It's just not going to happen this season. So everyone needs to be a little patient. Her jumps have power and she has a good jump techique. Mentally she is a fighter and does not give up on a program. Not every talented athlete has the mental toughness, so Liza could make it even in the highly competitive Russian fed.