I think ironically the reason why FFIX is so under-represented reference-wise in FFXIV is because it's just like FFXIV in that it was designed specifically to be a fanservice title full of references to FF games that came before it - so there is not as much 'original' ideas to draw from when adding fanservice jokes and references to it here in FFXIV.

Having said that, I'd be all for this, on one condition - as long as I can get Garnet's white princess dress I'll be a happy kitty. :3