Have you ever tried a "jack-of-all-trades" party in this game?

[Wolf Kanno]

I've done it before and it's frankly not the ideal way to go about the game. Mainly because leveling up everything is tedious. The stat up/down grades are not a huge issue except if you're trying to max out things like Evade which are more difficult to level. Getting all of those skills to max on the other hand is just time-consuming, especially when magic gets involved, and certain weapons lose their usefulness since getting max stats will make their stat boosts utterly useless. Not to mention that making everyone good at everything makes the game rather boring. You'll spend half of it grinding and the other half waltzing over everything else with your unstoppable dual-wielding, Flare casting, death dealers.

Honestly, do it once to say you did, and then realize how specialization is actually more fun.