Because he's a f*cking
person!
It's NOT the same as having chocobos, ahrimans, etc. in different FF games, because those are just
races.
Whitemage, Bard, Dragoon are just
professions.
OF COURSE you can have them in different kinds of worlds.
Nanaki is absolutely different though. He's an actual
character, wanting to have him in FFXIV is the same as saying "
When human sidekicks make their comeback to the game, can I have Cloud from FFVII as my companion?
"
Also, Nanaki is one of my favorite characters from FFVII and I find it very degrading that people want him as something to use for riding around on
I don't mind having more options for mounts and companions than just our chocobos (would be too hard to implement them before ARR launch though), but I'm strictly against using characters from other FF titles as companions in FFXIV.