Speaking as a person who has never really been huge into the genre, but love this game, I want to say its the streamlined process of the entire package.
Being able to collect multiple quests at once, and actually finish most of them while in the battlefield without going back to the respective party.
The fact that the battle system is engaging even though most all of your basic attacks are handled by the game, but you still have your Artes, direction control over the character, team moves and Motivational input (forgot what it is called)
The fact that the game is smart enough to reward you for most anything you do in the game. Want to explore and discover new location, here's a ton of XP for doing so. Using the same special attack, here's XP for it. You used this character X amount of times in battle, don't forget your XP!
Even though it took me a while to get it, I like the simple crafting system, that encourages building relationships between the characters.
The ability to fast travel to anywhere on the map you've already visited is a HUGE get for me as well. I want to return to the Gem Maker in Colony 9, its like 3 button presses, so I can do it, unload some gems and go on back to an area that's like 50 hours deep into the game.
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