(1) You don't know that, no matter how many times you try to pass it as a fact.
(2) False. What made the high elves shorter and lighter-skinned than the night elves was not the Sunwell, but their disconnection from the Well of Eternity and the World Tree. Elves found in other lands would also have been disconnected from the Well of Eternity and the World Tree, so they'd likely be shorter and lighter-skinned than the night elves.
What you wrote is irrelevant, because you're not the one in Blizzard who makes the final decisions regarding lore. New playable races can come from alternate dimensions. Pandora's box has been opened. That is a fact.High Elves will not come from an alternate dimension.
That is meaningless because more blood elves can leave Silvermoon. Even after the schism there were still blood elves protesting in Silvermoon. And Blizzard could still make Lor'Themar make a controversial decision that could cause another schism.Any dissatisfied elf left Silvermoon during the initial schism and there weren't very many of them.
One: we have not been shown yet any elf (high or blood) actually being converted.Void Elves can zap any willing adult elf and have a new member. That is not an option really available to the exiles.
Two: you are one big supporter of the idea that high elves and blood elves are the same. Then that means high elves do not need to "zap" any blood elf to make them into a high elf.
Population argument does not fly anymore.Given they are the only race explicitly ruled out on the grounds of their population (Caydiem 2005).
Population argument does not fly anymore.Given that this was reinforced by the Warcraft Encyclopedia in 2006/2007.
Population argument does not fly anymore.Given that the Warcraft Encyclopedia was confirmed canon in the early 2010s by Sean Copeland (aka Loreology, the keeper of the literal Warcraft bible)
Population argument does not fly anymore.Given that Ion Hazzikostas on two occasions in 2017 and 2018 cited their low population as reasons why they aren't playable...
They're not. I'm sorry if you refuse to see the precedent for all three options I've posted here to boost high elf population numbers. What I wrote is not "fanfiction", it's stuff Blizzard has done before. As recently as little more than a year ago, in fact. While you, on the other hand, are trying to deny facts shown within the game, to the point of implying that high elves cannot reproduce with other high elves.You are in fact wrong. The High Elven exiles are very much bound by the population argument. Pretending they aren't simply because you don't like it is not a platform for debate, it is denialism.
Last, but not least: when the Highborne were banished from Kalimdor by Malfurion for refusing to let go of arcane magic, they left in various ships, and sailed to lands unknown. Who's to say that some ships were not pulled astray by storms during the trip and landed elsewhere we don't know about?
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They don't have to "recruit" anyone. Blood elves could come to them on their own. Also, why would they have to have the green glow of their eyes 'purged'? People here keep saying that 'blue eyes are not enough differentiation', so why suddenly it is, now?
Blood elves are not a monolith. Protesters within Silvermoon existed before, and Blizzard could make Lor'Themar come to a controversial decision that causes a bigger schism.Blood Elves have their Sunwell back, and they have never been that much Alliance-friendly anyway.
"Abandoned". Yeah. Much abandonment when the Silver Covenant came to Silvermoon's aid against the trolls of Zul'Aman...They have kept to themselves, while your "High Elves" have abandoned their people in more than one way.