A lot of people want High Elves as a playable race or sub-race but what if I told you that you can already play as a High Elf. First of all we need to establish the difference between a Blood Elf and a High Elf for that I will use Valeera Sanguinar, Vereesa Windrunner and Lor'Themar Theron to establish the difference. Everyone who's currently not a part of the traditions upheld in Quel'Thalas is considered to be a High Elf. The tradition I'm speaking of is that blood elves sate their addiction of magic many times by consuming magical creatures including demons. Anyone who refused to succumb to their desires was kicked out of Quel'Thalas. In Night of the Dragon when Iridi made the claim that Vereesa was a Blood Elf to witch Vereesa reacted with immense anger. Iridi later understood her mistake and the book states "her eyes was enough to prove that to be true." Lastly we have Valeera Sanguinar who describes herself as a blood elf but she is not aligned with the Horde nor does she reside in Quel'Thalas. Now back to the title yes I'm not kidding High Elves are already playable. You see blood elf death knights are not addicted to magic as was stated by Blizzard. This to all extent and purposes means that if you play as a "blood elf" death knight you are in truth only a high elf who has been accepted into blood elf society because you have no need to sate any magical desire.