I do not have too much experience with ID travel as I try to avoid it. However could you not get several ID50's from ANA and book seats that suite your roster. This way you pay less for your tickets and have confirmed travel in place ? Just an idea.
Who tends to be the most competitive to OZ/NZ from Japan - ANA, Ansett or ANZ ?
How much is a business class seat from Kansai or Narita to Bne or Syd ?