Aye, they're manga-infected, the whole lot of 'em. Still, I have to say that every FF I've played has seemed quite harmless. Well, in most cases, anyway. Lulu was a little... um... bare, and so was that Dona, but EXCEPT for Lulu (and Dona), I've seen worse out in the city. And FF isn't particularly big in my neck of the woods.
With all that said, I haven't played FFX-2... That one seems a bit less neutral than FF9. *cough* I haven't seen much of FF12 either, for that matter, but it doesn't seem worse than a day in town. Well, a SUMMER-day in town.

darkchrono: Like others, I feel videogames is the wrong place to start this kind of crusade. If you really have to, go after those who made that volleyball-game (now I'm almost embarrassed to know what it's called, hehe!) instead of FF. If you're desperate for games with fully-clothed characters, I'm happy to point you to Shining Force. Or Grim Fandango, for that matter. Nobody has any skin to show! (Except for the demons, ok, fine, sheesh.)
Oh, one thing about Xenosaga. I heard something that should be classed as a rumour about the MOMO-fixation. That little tidbit claimed it (the MOMO-fixation) was throwing a boot at all the other manga/anime-artists who SERIOUSLY sexualizes small girls. (If you ask me, Shion has a little more to, um, put on display.) I must have dredged it up through a Xenosaga chatzone somewhere. *Shrug*

TheAbominatrix: Well, strictly speaking, isn't a nun's outfit fairly easy to model? Anyway, I doubt Auron would have made sense wearing only a pair of tights (spandex?). Sure, the clothes doesn't make the character, but the character should make the clothes. A little bit.

Zaphier: Well... I kinda bought Planescape Torment because an ICQ-dude insisted that it was great. The nudest character there was (excluding the floating skull) the main character - a quite old, very scarred, gray male sprite. Hotness! (Yes, there were female characters, yes, there were prostitutes, but nothing was sexualized.)