I could actually buy that as a plausible explanation...it hadn't occurred to me. Still, if that was their reason, there should have been a line of dialogue somewhere explaining it. As it stands it looks more like Square simply wanted to play to the horny teenagers...they've done it before with Final Fantasy X-2...and don't forget about Tifa's ridiculously excessive bust size in Final Fantasy VII...completely ignores what an athletic bust size actually looks like...
Well, TBH I hadn't actually thought about it until now: but you bringing up the subject of Fran's clothing really made me think about it, I guess.
I haven't actually played X-2 and I don't think I want to- I've seen some of the FMVs and it's a load of rubbish about dancing. Also, the new 'Paine' character is a joke, and they completely destroyed Spira with all this crap about sphere hunters and 'New Yevon'. 'One thing at a time'? WTF? That isn't Yevon at all. Well, anyway...
As for Tifa, I didn't really notice that, mainly because the models in that game are a joke and she's never the focus in the CGs. In Advent Children though... Yes, you are very, very right =[
However, I don't think the characters are the main problem in FFXII, even if most of them are there just as plot devices/filler characters. No, I have two main issues with FFXII: the grinding, and the storyline.
Firstly, the grinding. I'm 20 hours into the game, done 2 lengthy periods of grinding so for, yet I'm about 5 levels behind what I'm supposed to be at. I mean, WTF?! I don't even make a point of avoiding battles, either. In fact, I enjoy them. Or rather, I did, before I fell behind in levels and each battle with a bog-standard field enemy became a chore. It's as if everytime they let you return to Rabanastre they let expect you to do absolutely tons and tons of grinding. That's just stupid. I understand that they have a nice new battle system and all, but they should at least include minigames etc. as part of the main quest too.
FFVII's Midgar section was one of my favorite sequences in gaming, mainly because of the variety of things I had to do, from cross-dressing to minigames to going into the ShinRa building. In FFXII there is, literally, nothing to do except grind and fight. The side quests are a joke, as they merely involve more fighting. Anyway...
The plot, is also rather poor. Now, I like the places and events and the way it all fits together in a political sort of way, but there's no main goal. Let me elaborate: In FFVII, you're chasing Sephiroth. In FFX, you're praying in the temples. That isn't all there is to it, but no matter how much random crap happens, you're still working towards one objective. In FFXII, though, something happens, you go through some dungeons and bosses and then you go back to Rabanastre. The plot goes all over the place, and although they do, in a way, have a focus on defeating the empire, you don't feel like you're working towards that goal at all.
And another thing: Balthier is a sky pirate, not a guardian or a fellow member of AVALANCHE. His motivations in helping you get increasingly worse until he goes to find out about Nethicite with you for no bloody reason at all. Poor, Square-Enix, very poor.