Sorry for the bump and all...
But do you think it would be possible to use these tools to add Metropia, The Amphiseum, Vertica and/or Outpost 7 to the Zone Mode selection screen, in either the PS2 or PSP version? (The latter could probably be done through a modified Data.wad)

P.S.: Outpost 7 would probably be pretty crappy to play in Zone Mode...