Spanish is #2 when it comes to native speaking people, but after English if you count how many actually speak the languages. How many of those actually play FFXIV ? No offense, but a lot of those are from South America, and I doubt there is that many there playing FFXIV (again, no offense)

Also, if you know English, why do you want a Spanish version ? You will still have to communicate in English (mostly) to other players, and is spell descriptions really that big of a problem ?

I'm Swedish, and I wouldn't want to play a Swedish version even if it existed... I don't want to see some weird sounding translation of everything, and have a hard time talking about certain abilities and such, cause I don't know/remember what it was named exactly in English....