Since the tiger mount players requested got stuck behind a rather massively unobtainable achievement for many- what about another tiger mount; a white tiger mount with an eye color that's not bursted-blood-vessel red?
It could be a MGP prize from the casin- I mean Gold Saucer. They could call the mount whistle item the "Mirage whistle/flute/fife/horn" or something. Could even call the actual mount "Magician's Tiger" maybe. Give us another long-term reason to be in the Gold Saucer again.