Based on an hour of playtime
Things that I do like:
-Remixed music from various FF games (the Gurgu Volcano, FF1 battle theme, FF5's Sealed Castle of Kuza are some I've saw)
-FF trainspotting
-Attractive graphics - arguably the current 3D pinnacle for DS
-Card based gameplay *MAY* get to be pretty deep and strategic (Baten Kaitos showed me that I can enjoy cards in a battle system)
-I like how new chocobos, people, objects, etc get added to the world map as you complete minigames... reminds me VERY much of SoulBlazer, which is only a good thing
-Dialogue that fits the game - lighthearted, with some silly references and jokes, which aren't out of place here like the "Real ultimate power" and "Trogdor" jokes in the FF advances, and not excessively punny to the point of annoyance like Rocket Slime
Things that I don't like (may of course change as I play more!):
-Trial and Error in some of the minigames... some of the "gold" targets for the minigames (like the bomb wall, and stopping the rolling ) seem nearly impossible to get without LOTS of retries... but I'm getting quite good at overcoming my video game OCD and not trying to get 100% for every single damn game
-Some of the minigames feel fairly uninspired, i.e. nothing as fun as the Slingshot in SM64DS, arguably the most fun stylus minigame ever