I frankly don't really get Kostornaia's program: to me it's just a bit generic and boring hwell: I would really like to understand what they all find in it!
Imho, it's her refinement and musicality. She looks sensible, polished, a real artist. A little generic (unlike her sp) yes, but it probably looks boring because it's the same old Eteri recipe: endless step sequences and spins in the first half and then jump after jump after jump. It gets boring and predictable.