I can totally see it
On ptr, Alleria becomes the first high elf to embrace void magic by siphoning the very essence of a fallen Naaru, and she ends up mastering its powers.
I think there's a good probability she will teach her newly acquired knowledge to the remaining Allerian elves of Argus and Outland the way Illidan did to Blood elves (Yep Thalassian rangers who followed Alleria during WII are on Argus too : http://ptr.wowhead.com/npc=121559/high-elf-ranger) but also to her sister Vereesa who in turn, will bring what she learnt to the High elves of Azeroth, thus creating a new lore and unlocking High elves as a playable race for the Alliance.
From this way, the high elves would finally become interesting counterparts to blood elves instead of just being Alliance-loyal blood elves.
Blood elves would draw their power from the light of a Naaru, while High elves would do it from a dead one.
Void High elves would be a darkened elf race with a mix of thalassian culture and void magic style. Instead of just having generic classes, they could bring to the Alliance some interesting classes combinations such as Void paladin, void cleric and void magister. And it would really fit the upcoming expansion based upon the rise of the old gods !
What are your thoughts ?
(found on Scrolls of lore) datamined stuff from 7.3
EDIT :
Void elves are now officially a thing !
These voidelf items got their unique icons !
09/15/17 Edit
http://www.wowdb.com/npcs/121559-high-elf-ranger
http://www.wowhead.com/npc=121559/high-elf-ranger
This is new guys. High elves rangers using the void.
Void Arrow
60 yd range
1.5 sec cast
Requires level 20
Inflicts Shadow damage to an enemy, increasing damage taken by 10% and reducing their movement speed by 30% for 8 sec.
Deteriorate
40 yd range
Instant
Void energy ripples through an enemy, unsettling the fabric of their reality, increasing damage taken by 10% and reducing movement speed by 30% for 8 sec.
Void-infused high elves are a thing.
Edit : 10/22
Seems I was right folks !
http://warcraft.blizzplanet.com/blog...aces-datamined