I just started a new file so I'm pre-planning a bit now.

Vaan is going to specialize in Light Armor, so his jobs will be Thief (Daggers), Monk (Bare-handed and Poles) and finally Ninja. Once I get the better equips for speed, I'm twinking him to Ninja.

Penelo is going to be a sage, specializing in Black and White magic. I may change this and make her a pure white mage or a white mage Green Mage combo. She'll stick to Mystic armor.

Balthier is going to be a ranger/machinist, so he'll get some 1-handed swords and a few shields but will specialize in guns, crossbows, explosives, and possibly the bow. He'll also be using a ton of the skills in the game. He'll use low level Heavy Armor and mostly Light armor.

Fran was originally going to be a Green Mage using bows and Hammers but since she already starts with some black and white magic, I may end up making her a Red Mage, she'll stick to some light armor and mystic armor but I'll limit her from getting the high tier stuff and I'm not letting her use shields and swords.

Basch is going to be Cecil Harvey... so basically a Dark Knight/ Paladin combo depending on what is needed. He'll get some white magic and maybe a few arcane spells. He'll have a gambit set up for Soul Eater unless it becomes troublesome like Steal gambits are and I have to use him manually. He'll equip some light armor for Paladin but mostly will be using Heavy Armor. He'll use Shields and 1-handed swords until Greatswords become available. His last single handed sword for Dark Knight will be the Blood Sword.

Ashe, will be a time mage in the beginning with a few black and Arcane magics as well. Once Samurai swords become available, she'll become my Samurai character though she won't be able to equip the highest tier Heavy Armor but I may make an exception for Mystic Armor. Genji Armor will be exclusive to her.

I haven't quite decided how I want to do summons just yet. I know Belias will go to Ashe no matter what cause it works for the story. I need to experiment with them a bit in my other file and do some research before I give them a good partner. That's the plan at least.