I understand that for unlocking purposes. But 90% of the "Jobs" in traditional final fantasies are not limited to one weapon and forcing them to be will be rather boring.
I don't mind that Gladiator will obviously unlock Thief, Paladin, Red Mage Etc.
But Thief doesn't always use Swords, It can use Fist Weapons, Daggers, and ranged weapons. amongst others.
Paladin can use swords, great swords, lances and hammers.
Red mage can use swords, clubs, daggers, staffs and fist weapons. etc.