What's wrong with the childhood stuff?
It's, for lack of better words, just childish. It's easy and it's drawn out three full and lackluster dungeons (Jabu Jabu maybe being the most of an exception, but the fact it's this awkward and poorly mapped escort mission more than makes up for whatever uniqueness it has).
I simply found the adult dungeons both literally and metaphorically "grow up" nicely.
Tales of Xillia -- Playing NG+ and bored of it. I'm doing trophies because they aren't terribly hard, and while I'm glad a lot of them aren't "Do this 1000x" (although very few are), but man..it still feels like it's too much to do the ones that ask you to do something a mere 100x.
I also feel weird with anime where you have sweet Elize and her cute little tiny nose...and Rowen's elongated old-man nose that looks incredibly "human" to Elize's "anime nose". (or with computer keys: going from < to , ).
Nunace aside though, I think the best part of this games is when it reverts to more "traditional" Tales interaction through sub-events. Previous Tales games had a knack for having the party stand around in a group and chat -- just chat. I found more character development happens in these little conversations but also help to flesh out the plot and are a lot more meaningful than the whole of the "grander cinematic action sequences" that make up most major story sequences.