Best plot in gaming period.
Its main flaw is that the plot takes some research, if you just play it you'll be kind of lost, but if you take the time to read the bios of characters and do some extras it becomes clear that never before has a plot been so interesting and great.
Other than that the problem is that combat can get kind of dull. It involves quite a bit of grinding and once your characters are decent (i.e. silly) and you have Orlandu, then the game becomes ridiculously easy. You can a) kill any guy from long range in one hit, b) teleport, c) be unhittable by regular attacks and d)kill the bosses in about 2-3 hits.
The characters also don't really have noses and the animation could be better done but I don't consider those real issues.
Now to the brilliant plot. It starts by pulling a Tarantino on you with the timeline. But thats not the great part, this is the one JRPG I know where you're character is NOT the main character of the plot. You play an underappreciated, unrecognized and in fact hated hero. The story revolves around incredibly interesting and complex politics of a civil war being orchestrated by the church. Its characters are very far from 1-dimensional, often being devious and quite complex. Delita (the main plot character), is a backstabbing user who you love for it, and most of the other characters are two-faced backstabbers as well. In fact so much backstabbing goes on in this game goes on that you should come to expect it, but you DON'T!! That's what so great about this game. Its ending is thoroughly depressing, but put to rest my anger at JRPGs for always having the final location collapse and have the main characters only just escape. This one every dies!!! AWESOME! Even the guy who tries to get the story out is HANGED!
Finally a story where the hero isn't some glory fiend. Of course Square had to be complete Tw*ts by making Ramza (SPOILER ALERT!!!) survive and live a quiet life with an unknown epilogue. Guh.
That aside, this is the best plot I have ever experienced in any game and don't say FFVII had a better one because you are f*cking LYING or have never played this game.