As much as I liked my little Wuffi in FFXI, FFXIV is a different game and I don't feel the little dragonling would add much as a class feature, especially as it would likely mean a nerf to the class's personal output.

Now, that said? They've mentioned possible having other options for companions besides our chocobos. Partnering with a young dragon to adventure sounds like it'd be grand. Perhaps Kal Myhk for those who've done his questline?