You seem to have a lot of beef with elves 
That being said, Blood Elves particularly are likely going to be in high demand for content, as they’re most played race in the game, lol
- Overall I’ve seen you express rage about elves & discussed how you loathsomely despised them and vehemently wanted none of it, including & especially Blood elf content; despite being significantly shunned as a race
Honestly an elf aesthetic I wouldn’t mind as a new race however, would be the Venthyr – but I know, I KNOW you’d protest against that. lol
But 
To entertain your thread -
There are handfuls of races I’d also love:
- Arakkoa (High Arakkoa and twisted)
- Fel Orcs – Heck, I’ve literally made a thread about them: The Fel-Orcs
- Satyr … “Technically” elves, but I don’t think much needs to be said here. lol
- Sethrak – They even follow a loa too!
- Ethereal – They’d be pretty neat.
For a customisation option “new race” (eg. Eredar) you could also have Forest Trolls (eg. Amani & their models) 
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- Perhaps justify they’re an offshoot tribe from the Amani that splintered, akin to how the Darkspear were from the Gurabashi tribe.
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- Maybe situate it something to do with both their loa and maybe a code of honour they had with a handful of Quel’Thalassian elves when they had to band together for surviving the Scourge at some point? Whatever the case …
Honestly, I wouldn’t mind that as a mere customisation option upon our standard ‘Trolls’ race; especially since the one’s we have playable it’s not specified as “Just Darkspear Trolls”
- We could maybe help emphasise it with new voice-overs (/silly /flirt, etc) for the selected customisations and throw in a cosmetic tabard vendor that represents other various troll tribes who’ve joined the Horde In a sense you could also apply that concept to orcs via my ‘Fel Orcs’ thread that I earlier referenced too, but yeah.
The reason for orcs & trolls being possible customisation options, is that they’re not exactly “Unique” races — but could fit the bill, either way. lol