New jobs? Well with the game's focus on having jobs being tied to a weapon set we'd probably start there.

Tanks

Warmaul (2h), Warhammer/Mace + shield, Pike + shield, 1H gunblade + shield

Heavy melee DPS (str based, shares most common armor with drg)

Dual wield either hatchets or 1h swords, 2H gunblade, Warmaul, Scythe,

Light melee DPS (could be str or dex based, dex base shares most common armor with NIN)

Tonfa, Nunchucks, Bo, Whip, Dual wield hatchets or 1h swords

Healer

Fans, talismans, mystical orbs, chemistry kit, magitek machinery

Ranged physical DPS

Slingshot, sling, throwing knives, boomerangs, cannons, crossbow, cards

Ranged magic DPS

Talismans, mystical orbs, enchanted dolls, magic mittens (cause we need glowing hands) >.>