ok,a testimonial of FFXII from me...(I have played the Japanese version)

Yeah,the game rocks.It has several innovative aspects.The graphics have improved a bit since FFX-2,the characters get more detail on their face,hair and attire and it doesnt feel laggy even though on a PS2.The license plate system works well.
The story is of different flavour from the previous FF.It is more serious especially when describing the political crisis instead of emphasizing on the character's develepment.
The music is pretty good,with better sound quality than Uematsu's

However,there are also several downsides:
1)Active Dimension Battle
Don't be fooled by this.It wont get any more active than that.The battle system sounds good.But when played,it gets very awkward.It is actually no different than ATB,just it is done in a different way.You still need to wait for turns to attack.If you manage to attack with 3 characters at once,u get a combo.Active mode just way too strange,you stand there and get hit by monsters while u wait ur commands to execute.I would suggest that Kingdom Hearts battle system is the real "active" battle system.

2)Music
Good quality,but less memorable....

3)Lack of character development
The story focuses more on the political crisis,and it lacks some needed character development.You will have the feeling that " Is Vaan the main character?"

I dont know about others,but in my opinion,i find that it might get interesting at start, but it will eventually grow to boredom. The story is good for a novel and a movie,but if in game,sometimes i find it too much.( I understand Japanese and i know what the game is talking about)

However i think FFXII deserves a 90% considering it has its highly innovative aspects .