Have you paid attention to the game at all? The dragons are the titan forged protectors of Azeroth, why should they be trying to kill people and burn cities down?
As for being awe inspiring or terrifying.... really? Us player characters have murdered plenty of dragons, we've fought Demons, Titans, Old Gods and all manner of near deity enemies. Why would we be so scared of them?
And what should it matter of other franchises handle their dragons? They're not WoW so our dragons don't need to behave like that. Do you want them all to be the same regardless of what series they show up in? "Oh it's a dragon, must be evil cause ya know.... that's just what they are!"