You think think so? To me warforged are machines. Not just textured humans, but you have to have joints, mechanical bits, lots of segments and just a whole bunch of detail that even genasi don't strictly have (plus even then genasi can have things like fiery hair or cryst hair that's gotta be addressed too) so they're very complicated looking. They don't necessarily have human musculature and places like their calves and forearms tend to be more like rods than human shaped limbs, and then giving them facial options is complicated too since they don't really have detailed human faces and have more like... Iron giant style faces without much detail.
Plus in terms of the game itself, they don't have brains. The tadpole needs to literally, physically eat those brains in order to transform them. And the physicality of the creature in question does matter, otherwise halfling mindflayers wouldn't turn out so absurdly adorable. Also, where would they even come from? If they really are from Gortasb then they'd look like steel watchers, which are not gonna be able to wear armor or anything.
