mind to look exactly WHAT
https://wow.gamepedia.com/World_of_W...nicle_Volume_1
https://wow.gamepedia.com/World_of_W...nicle_Volume_2
they "retconed"? There is even sections for this on wiki.
the moment when you start bringing full fantasy, without any evidence of logic you will get Eastern style RPG games. It's part of the Warcraft history that you CAN actually use logic to determine events in this universe. (and every time when people scream that garrosh bombing terramore, sylvanas using blight are stupid decisions - they are blind, too peacefull, without even trying to understand what is is "War").
Like really why we love LORE of this universe? because it's not so stupid as other universes. Even VE have right to because they were Changed to determine their difference from Blood elves. Maybe it was bold desicion, but still development.
"High elved" don't have it. And without any actuall reason why Blood elves can't LOOK like new "High elves". Wich must be again - done by lore. With some reasons (and not like with VE who are "new" and will start developing from now, but much more reasonable cause it's old race, with developed lore, and tome 3 probably will support this lore even more). "High elves" are "High elves". Nothing will change it. Nothing will change that "High elves" are addicted to magic, are skilled magic users (even rangers), and developed as magic race. You either Change them completly with some mutations like void elves... or leave them be like now and add them to both factions.