That really comes down to what you do in battle with earlier entries. I like to use skills a lot, and that's something XIII is kind of lacking in terms of skills that don't just do the same thing. I like having Steal, Manipulate, and other quirky abilities to play with.
Honestly, I finished Chapter 3, and even with the Crystarium\/Paradigm System unlocked, the game is still fairly lackluster for my taste in terms of combat. I'm waiting the equipment mechanic to unlock because that's the feature I'm going to focus on more this time around. It's not helped by how limited it at first, especially since the game won't let you control who is in your party despite having a surplus.
I do find it interesting how much Fang and Dysley were foreshadowed before they appear. Furthermore, I still feel that Cocoon society doesn't really make sense to me, nor does the fal'Cie's plan.
Sahz has definitely been the highlight of these early chapters, being the only real voice of reason among a party of kids hooked on feelings. Lightning and Snow only bother me due to their utter lack of self-awareness. Like these two can't seem to notice they are the creators of all their drama. Hope is obnoxious, but I find people who feel the need to hoist blame onto others as a default defense mechanism for trauma to be incredibly annoying. Vanille, just doesn't make sense to me. Like, I don't understand why she dragged Hope with her to the Vestige. I don't understand why she's sticking with the party. I don't understand why she isn't making more of an effort to look for Fang. She's just weird, and feels like Rikku without any of her redeeming qualities.
We'll see what Chapter 4 has to bring.