Each race now has a "Weapon Expertise" passive racial ability, allowing them to wield a specific weapon type regardless of their class.
Orc: Axes.
Troll: Polearms.
Tauren: Maces.
Undead: Crossbows.
Blood Elf: Warglaives? Staves? Wands?
Goblin: Guns.
Human: Swords.
Dwarf: Maces.
Gnome: Guns.
Night Elf: Warglaives.
Draenei: Staves? Wands?
Worgen: Fist weapons, including a "hidden weapon" under Fist Weapons.
They wouldn't even have to edit the stats to make any of them useful. A Night Elf Priest with a warglaive could just use it for transmog. Like, a warrior can wield (and collect appearances) for guns, and they *definitely* can't use those. It'd just be a neat thing to add flavor to each race.
Also I really just wanna run around as an orc warlock with a massive battleaxe. Or a troll shaman with a spear.