If Gao does the hypothetical jumps you said all clean of course she would have a reasonable chance to make it but the judges would probably still put Flatt, Nagasu, and Czisny on the team over her at this point all things equal. We will see though.
It is true nobody knows what Yu Na would do in her first event of the year. I see them giving Miki a 2nd World title as a last resort kind of option for them though, they are probably already ailing they had to give her the first one. She was never a big judges favorite compared to the other very top (Asada, Kim, Rochette, Kostner) skaters. The judges will be praying any of Asada, Kim, or Rochette show up at Worlds and skates even reasonably well, and if none of that occurs and Ando skates lights out then they might grudgingly give her the gold.