One of the best things about production desiners, is they don't need a complex drawing just to add complexity to it in their own renditions. In Hollywood and TV, simple art sometimes makes the best production design detailing. Examples include Jhonen Vasquez (Invader Zim) and Tim Burton (Bo Welch). Neither of those guys draw all that detailed all that often. But they do have vision. A simple conceptual design drawing doesn't need to be complex to be transferred into a complex production design.
