Additional jobs to be introduced:
Conjurer--------Geomancer
Thaumaturge---TimeMage
Gladiator-------no clue. Dark Knight maybe. Red Mage maybe.
Marauder-------Beast master
Pugalist---------Puppeteer
Lancer----------no clue. None at all. Free'lancer' maybe?
Archer----------Hunter/Ranger. Pet class with a bow.

Weapons to be introduced:
Foil--------------Red Mage (f not a Gladiator job). Maybe RuneFencer.
Greatsword-----RuneFencer / Dark Knight
1h Axe----------Beastmaster (whip offhand) or Hunter
GreatKatana----Samurai, duh
Dagger----------Thief class > Ninja/Dancer jobs, possibly assassin
Silks-------------Alternate Dancer job or offhand(shuriken and silks offhand for ninja or dancer would be neat)
Mace/Club------no clue. This is usually a WHM weapon.
Skythe----------another Dark Knight possibility
Rifles------------Musketeer, Hunter possibly
Pistols-----------alt Musketeer, Chemist, Machinist, Corsair/Gambler

More jobs, no idea what weapons they'd use:
Blue Mage
Mimic/Mime