That last Cloud Serpent at around 1:30 is to die for, very Sha-like with the dark colours. Hopefully it'll be as easily/straight-forwardly attained as the rest
Despite that, the three 'new' races are practically Night Elf/Draenei/Tauren reskins, but I can give them the benefit of the doubt in hoping that all the 'race' efforts are going into the new race models instead.