I agree that it was groundbreaking in many respects, it's just that the storyline feels really shallow to me. And there's little character development. Robo, Magus, Frog, and hell, even Ayla are the only ones that have their moments. The tech system is too simple and there's no customization other than having the right party so you can use double and triple techs, and at higher levels you don't really need them anymore. In fact, the later battles are so strategic that you're really better off just using individual techs. The game is incredibly linear, which I could accept if the story was better, but otherwise, you're just stuck following the exact path the designers laid out until the very end of the game. Certain time-based aspects, such as the weapon chests, are underused, and feel sort of out of place by the time you can find them.
There are some good points to this game though, that I'd really like to have seen carry on through the genre. There are no random monster battles in the overworld, so backtracking and exploration doesn't get tedious. The fact that battles take place on a separate sub screen really improve the game's pace. The level up system is incredibly balanced, and there are only a few moments near the end of the game that require leveling in order to succeed, and you can always set that aside and do the side quests, which are really fun, and actually tie into the main storyline. The mini games are also really fun. I remember running around the fair for a few hours just having fun at the beginning of the game.
I do like this game though FFVI reigns supreme in RPG land for me.