Rewards based Races

Instead of having a new race available to anyone, why not have races that high levels could reroll as, as with Death Knights as a Hero class, have a race with each faction that newbies can't be, but experienced players could earn the right to be.  Perhaps a player would have to do quests to convince the race to be a part of the faction, with quests like escorting low levels to Beginner areas, and making a certain NPC a strong leader, and building up a city for them. 

Horde

Stonemaul Ogre

Possible Racial Traits

Enrage – temporary buff that increases size and damage dealt for 10-15 seconds

Strong - +5% to Strength

Two Headed – increases Stealth Detection

Imposing – Cast Fear effects last 10% longer

Possible Classes

Warrior

Warlock

Mage

Shaman

Hunter

+Death Knight

Mount – Mesonychid – a massive hooved wolf-type animal

Alliance

Furbolg

Possible Racial Traits

Bear Bite – does a quick bite attack

Leatherworker - +10 to Leatherworking

Insulating Fur – Fire and Ice resistant, and lessens bleed effects

Possible Classes

Shaman

Warrior

Hunter

Priest

Rogue

+Death Knight

Mount – Cave Ursine – Large, bear-like creature.

Also, perhaps instead of a specific tribe of Ogre or Furbolg, perhaps different tribes could be converted, through quests that kill the hostile leaders, and win over the hearts of the that tribe race, and convince them to join.