Alliance Subraces
Human
- Azotha/Half-Vrykul
- Half-Elf
Night Elf
- Nightborne
- Druidic Night Elves (Antlers, Talons, Feathers, etc)
Draenei
- Krokul/Broken
- Redeemed Man’ari (Warlock in place of Paladin)
Dwarf
- Dark Iron (Dark)
- Wildhammer (Wild)
Gnome
- Mechanized Gnome
- Leper Gnome
(Sand gnomes could be a more aesthetically pleasing alternative to leper gnomes)
Worgen
- Emerald Dream (Nelf) Worgen
- Bloodmoon (Northrend) Worgen
Horde Subraces
Orc
- Half-Ogre/Mok’Nathal
- Fel Orc
(Half-orc/half-draenei as a possible alternative to Fel orcs)
Troll
- Revantusk (Forest)
- Zandalari
Tauren
- Taunka
- Highmountain
Undead
- Newly deceased/Restored Undead
- Undead Elves
Blood Elf
- Darkfallen
- Integrated High Elf
(An alternate to helves could be half-elves, though halfbreeds are especially hated by the xenophobic and nationalistic sin’dorei)
Goblin
- Hobgoblin
- Gilgoblin
Neutral Races
Pandaren
- Furbolg
- Mountain (More red panda-ish) Pandaren
Additional Customization
- Racial tattoos
- Choice between upright and hunched orcs, trolls, forsaken and worgen.
- Piercings for orcs and trolls
- Horn runes for tauren
- Ear decorations for elves
- Pure white tauren
- Shades of brown, gray and black for orcs
- More skin colors and more diverse hairstyles for humans.
- Crazy body modifications for forsaken (I'm talking hooks, chains and needles!)
- A non-derpy female worgen model
- More aggressive faces for pandaren
Languages:
Human - Common + Azerothian/Stormwindian
Dwarf - Common + Dwarven
Gnome - Common + Gnomish + Dwarven
Night Elf - Common + Darnassian
Draenei - Common + Draenei + Orcish
Worgen - Common + Gilnean + Darnassian
Orc - Orcish + Kalimag
Troll - Zandali + Orcish
Tauren - Taur-ahe + Orcish + Mogu (Due to their history as slaves of the mogu)
Undead - Gutterspeak + Common + Orcish
Blood Elf - Thalassian + Orcish + Common
Goblin - Goblin + Orcish + Common
Pandaren - Pandaren + Kalimag (Additionally Common or Orcish depending on faction)
Thalassian and Darnassian are mutually intelligible
Am I missing anything? Is there you anything you love? Anything you hate? I also need to credit @shoc for giving me some of the ideas.