Every race, every class
The character creation screen now offers every class to every race: a Tauren rogue, a Gnome paladin, a Human shaman or an Orc druid, it's your call. Racial abilities stay off and base stats are the same for every race of a class, so the choice is purely about looks.
Every character now gets a legendary weapon of every type its class can use, right in its bags, and the hub quartermaster hands out more for free. Weapons hit about 30% harder. Hunters get the biggest quiver and ammo pouch with a stack of arrows and bullets.
First Aid is maxed on every character, and a new vendor at the hub gives away food, water and Heavy Frostweave Bandages, twenty at a time.
Fixed: duels in the hub (you couldn't hit your opponent), and same-faction arena matches. The Dalaran sewers were also cleared of Blizzard's old vendors and critters.