Quality, with the physical plates identified. We've had long arguments about a bright line that nobody had ever looked for on the actual metal. Record the real feature's position and judgement before asking the camera to agree with an annotation.
Who decides what happens to a borderline plate? We had operators handed a bad box with no explanation of whether bad meant scratched, dirty or bent. Not much use as a teaching reference.
And agree the viewing conditions with them. Then compare the camera's presentation using the same identified pieces. A physical acceptance decision doesn't guarantee the proposed image makes the relevant feature visible.
Check seating while you're there. A plate catching on the nest edge can make small presentation changes look like random lighting behaviour. I'm not saying that's yours, just worth inspecting