This is all true, and I like all this about the Void Elves as well.
I have two Void Elf alts myself.
I still want High Elves for aesthetic reasons as well. Though I obviously hope they don’t change the High Elves using Night Elf greetings and lines, because that’s what I like about them. And because I grinded the Silver Covenant rep back before it was easy to do so (and back before there was any reason to do so before Patch 3.1). My personal reasons aren’t very deep.
In the short story In the Shadow of the Sun I find Aurora Skycaller and Renthar Hawkspear and the High Elves having had to survive in the Plaguelands on their own and what they went through far more interesting than the rest of the story being Lor’themar’s pity party for being a chump politician. And in Quest for Pandaria - Part Four I was actually more interested in Vyrin Swiftwind even more than I was of Talithar’s act of self-sacrifice.
There are interesting stories to be had with the High Elves. I don’t think people who are against their playability want to think about that, though.
It would never work for the same reason Void Elves didn’t meet peoples wants. Even if Blizzard literally added even fairer skinned, blue eyed Blood Elves (and I already role play a Frost Death Knight Blood Elf as a High Elf to achieve that very aesthetic) people would still want High Elves added so that they could say they were playing a High Elf and not a Blood Elf. And, I dunno, so the NPCs would call them high elves when using the <race> tag in flavor text or something.
I am ardently for the total breakdown of factions, but for gameplay reasons and to eliminate faction population balance issues. That it would likely mean a faction war could never happen again would just be a bonus.