We had a gold chocobo in FFVII, it seems only fair that the main mascot in FF gets its own gold version in FFXIV. We keep getting all these other "gold" mounts as gil sinks but not even a chocobo which doesn't seem right. It's their time to shine.

Just make it a normal chocobo, but give it the same color and effects of a certain lustrous Endwalker mount. Half the work is already done, just combine the mount + effect, easy peasy.

While the other gil sink mounts have the gil effect, you could make an exception so it's just the shiny effect. OR just make it an MGP mount then you don't have to worry about the actual "gil effect" coming off it and letting it just have the "lustrous effect".

Also "Gold Chocobo Feathers" are a thing in-game so there's even context. Or take it a step further and make a "Silver" one as well, especially if you go the MGP route. You could have two massive MGPs sinks instead.

Thank you!