Which would be no different than pointing to the current 4-legged reptilian Dragonsworn and saying 'These are NPCs that serve Dragons, just like your player class would!'. What we would be talking about is an archetype that has absolutely no representation on a player class, like for example being a Champion trained under Wrathion and his new 'Dragonflight'.
Cuz you'd Strawman the hell out of it. Why else would you want me to point out any specific NPC, even if it were a passing relation to the concept I'm talking about? Dragonsworn Player class does not exist. If Scarlet Crusade Monks were used as an example of a Monk class, it could easily be dismissed as being too similar to Paladins and lacking interesting theme or gameplay mechanics to support a full class. What is the point of confusing the topic by misrepresenting it with ill-suited NPC examples? It would have been much easier to explain a Monk class by say citing Diablo 3's Monk, who uses unarmed strikes and dodging; but even that example lacks the Brewmaster, Mistweaver and Celestial Animal themes that makes WoW's Monk shine.Yet you can't show me a single NPC in the game that carries this theme, or is similar to this class you wish to construct. If the basics aren't present in the game world, its highly unlikely that it would appear as a class.
We're talking about a new class that has Draconic themes. There is no reason why it could not exist. It has the exact same likelyhood of existing as a Tech-themed class.