I played FF12 as a Hunter. I looked at the plot as just an excuse to open up new locations so I could hunt things there. I would forget where exactly I was supposed to be going, or why I was supposed to be going a lot. But it was ok, because I was having fun genociding all the monsters!
I loved the idea of the storyline, where your party is sort of in the background of world events rather than being the focus of them, like in FFT, I guess. I also liked how Ashe was the protagonist, despite Vaan being the player's character. On the other hand: I can pretty much hear the script writer/scenario designer saying, "Star Wars, what is this Star Wars you speak of? I've never heard of such a thing!" The execution of the storyline leaves much to be desired though.
The art direction was amazing for the most part, the characters all managed to be dressed utterly ridiculously but somehow managed to still fit into the world. I mean, Ashe's pink miniskirt, Fran's battle bikini and Basch's board shorts + sandals didn't bother me nearly as much as they should have. What did bother me was Vaan's freaky carapace abs. The new summon beast designs were great (and its unfortunate that they sucked so hard in actual gameplay).
There were a few places where it slipped up. The jungle looked, which is adjacent to a snow field, and felt more like a cavern.
I liked a lot of the weapon options, but was disappointed to find out that so many of them were so utterly useless.
The cast was fairly hit-or-miss, but Ashe got points for having a backbone. I was sad that Fran turned out to be your standard issue "Elf living among humans."
I had fun tinkering with my characters. I went the route of customizing each party member into a certain job (Ashe was a Paladin, Vaan was a Black Mage, Penelo was a Gunner-Cleric, Fran was a Warrior, Balthier was a Support Magician, and Basch was a Monk, although he had to start taking up the use of weaponry because he wasn't doing so well without it)...