Don't really like the way the game keeps splitting me in teams of two, it is good for the character stuff, but the battle system really excels when you are in threes and can really take advantage of the paradigm shifts strategically. Lightning is also a ridiculous badass in combat and the game is noticeably easier when you have her in your party, whereas before i opened up some of the classes for Sazh, it was getting a little tough. Combat is still way too much fun in this game, and i absolutely love the streamlining to that system, the auto-healing is wonderful, but i do wish the level design was more interesting, you can do a lot with linear corridor design to mix it up, but they haven't bothered yet.
As for the characters, Sazh is is by far the best so far, like him, Lightning is quite good but the personality jars with the teenager on a night out character design, Snow is still a 10 year old in the body of a 20 year old and looks like an asshole surfer dude but is growing on me a little now he has stopped saying the word "hero" every few minutes, then Hope and Vanille need to die fast.