Ok, so for many years we have had specific races created by blizzard that we can only change facial features, hair style / color, tatoos, ear rings and such. There have been many people who would like to play a race but as a "sub race" or in other words, races that tie closely with the race you choose.
If you want to play as a Tauren, you could either choose the normal Tauren, OR choose Tunka, or the new tauren like race in MoP. They would all have tauren racial skills but the look would be very different besides the basic build.
If you want to play Night elf, you could choose High Elfs, Blood Elfs (a sub race who chose to align with the alliance, yet still has fel energies they have succumbed to).
If you wanted to play Orc, you could choose the red skinned orcs from outland, etc etc.
You get the idea.
What do you think?