Theres a whole thread for Kul’tirans I put together. 
But more to the point, people can still ask for those things even as Void Elf players ask for things.
The main issue is other groups of people aren’t putting up their own threads and actively trying to push it forwards.
Like a lot of Blood Elf players come to high elf and void elf threads to say no, but rarely go to their own blood elf threads to give blizzard ideas or their desires for Blood Elves.
People requesting for their preferred race isn’t the issue. Its people not requesting for their preferred races that is the issue you’re facing. Go be the person to do it.