We do have some kind of a magic/tech based school of thought in Eorzea, it's especially prominent in the Limsa boat fight. Garlean tech seems to be steam/magic based but they're also considered monsters. The Kobolds have coal-powered digging machines which you can see in one of the Limsa faction leves.

Things like that aren't too far off from what you're suggesting so I think it's not a bad idea.