You keep saying shit you do not truly understand. Visage form /is/ a disguise. Dracthyr doesn't even have the ability to transform until after the intro is done. Have you actually read dragon lore? The main purpose of the visage is to integrate themselves into society to watch the mortal races and/or in the case of the corrupted flights to subvert it but once shit goes down, they all transform back to their true selves.
Do you see Dragonmen running around as humans? No
Do you see Drakonid running around as humans? No
Do you see Dragonspawn running around as humans? No
Dracthyr isn't even the first Humanoid Dragonkin and *none* of them have a perma-visage form or even one at all.
“Many ages have passed since we dragons first peered down from our roosts and watched the young mortal races begin to spread across Azeroth. As we saw their villages grow into cities, and their cities become kingdoms, the timeways told us that we must find a way to live alongside them. And so it was decided that we would each assume a form that would allow us to walk freely among their kind and see this world as they do.” - Alexstrasza
You turned every head in Stormwind with your arrival, $p. No doubt some citizens were more... amenable to your presence than others. In order to better commune with other races, we dragons adopt a mortal visage, like the one you see before you. Not only does it put allies at ease, but it makes passing through doorways considerably less disruptive. Clearly the essence of dragonkind flows through the dracthyr. I suspect you may share our ability to assume a visage. Walk with me. - Wrathion to Dracthyr
The false information you're tossing around about already pre-established lore is wild. Just stop. Say it how you really want to say it. You want another Elf/Human class and you're upset that you can't be Elf/Human. Elves already have an entire hero class dedicated to them let the others have something for once before making it yet another flavor of Elf because 5 different variants of Elves isn't enough. Your reasoning is so bad that I had the need to make an account here and stop lurking because it made my head roll.