Tbf, they just gave us the most asked customization option that was still left after we got High Elves, Wildhammer Dwarves and Sand Trolls with Shadowlands already. You could even argue the smaller blood elf ears are supposed to be half elves ears. I think only Forest Trolls are left now. After that, the only stuff people will ask for are propper (allied) races like Tuskarr, Vrykul or Broken.