Your post on blood elves still having their addiction brings up some interesting opportunities for Blizz to add some more depth to void elf lore. I would assume they tap into the void somehow to feed their addiction, but as far as I know they never outright say that. It would be interesting to see regretful void elves who can't walk away from the void because they can't access the Sunwell. If you have any thoughts on this, I'd love to hear them!
I’m sorry it’s taken me an impossibly long amount of time to answer this. I originally intended to do more research because I don’t actually know much about magical addiction, but I never got around to it. To be honest, I didn’t even realize that void elves might still suffer from an addiction until I got this ask!
Knowing what little I do, I imagine that any connection to the Sunwell, a fount of both holy light and arcane magic, would conflict painfully with the void elves’ newfound void form (for lack of a better phrase), forcing most, if not all of them, to give up the Sunwell. This would make their addiction more severe than that of the average blood elf, who has the Sunwell for sustenance. However, there may be void elf priests (and undead priests, to draw an important comparison) that wield the Light, even though it undoubtedly causes them harm. Therefore, it’s possible that some void elves do not suffer as greatly from addiction because they’re able to maintain a connection to the Sunwell. Given that blood elves still suffer from it, though, even with the Sunwell newly restored, I’d bet all of the void elves do experience addiction in varying degrees.
(Someone has pointed out to me that “holy” spec void elf priests do not currently exist in lore. The priest class, they argue, is almost certainly available to void elves because they can be shadow priests, but it’s unclear if void elves are realistically able to wield the Light. Small interactions between Alleria and Turalyon, powerful users of the void and light respectively, caused them immense pain, so there’s no saying what a void elf channeling the Light would feel).
What I don’t know is whether or not the void feeds the void elves’ addiction or if it’s possible that the void has “cured” it completely. Given that their dependence is on arcane magic and not the void, I’m inclined to believe that it has not actually cured it. However, that doesn’t mean the void can’t manipulate them into thinking one way or another for its own ends.
I took a cursory look at the Nightborne recruitment scenario dialogue which raises more questions than it answers about this topic. Alleria, a rather unique void elf compared to her counterparts, never alludes to the Sunwell causing her any harm. It appears at first glance that she can still feel the Sunwell, since she says, “The Sunwell has changed… but its beauty remains,” after seeing it for the first time since before it was corrupted by Arthas. Of course, it’s possible that Alleria can’t actually sense this change and is just commenting on what happened to the Sunwell. (Personally, despite Alleria’s vague wording, I’m inclined to believe she does have an innate understanding that the Sunwell’s energies have been altered.) It could also be that the Sunwell is indeed causing her physical pain, but we wouldn’t know that without Alleria saying it, and that certainly isn’t something she wants to voice aloud in front of people who are skeptical about her being near the Sunwell in the first place. Alleria is, as we’ve seen in both the audio drama and the comic, content to keep quiet about the light hurting her. With that in mind, I’m hard-pressed to draw any solid conclusions about what the scenario says about the void elves and their relationship to the Sunwell.
I expect that if any void elves are still addicted to arcane magic, they use their void abilities to “acquire” it from various sources. I’d almost even dare to argue that the void itself is like an addiction since it has often been described as an endless hunger. This is really just conjecture and speculation at this point, but it would be interesting if the void completely supplanted arcane addiction in much the same way that the Death Knight “curse” does for blood elves. For those interested, the Ask CDev answer reads, “[Blood elf death knights are not affected by their racial addiction to magic], though their new addiction, the one all Ebon Blade death knights possess, is arguably worse: the need to inflict pain.”
With all that said, void elves probably still have an addiction to arcane magic until stated otherwise. However, depending on whether or not they maintain their connection to the Sunwell at the cost of great pain to themselves (if they even can), that may determine how severe their addiction is.