The simulation is not bad, but also not good.
Why there are materials like "mirror" or "keramic"?
Often my part is fully black, so i must rotate it until it will be illuminated "mirror"
If the endmill cut an line, there is no edge if the edge is on the backside.
I can not see the edge until i turn my part 180 deg.
So i think it is not the baddest idea to improve this a little.
Add some customizations for CAM simulation
(and maybe CAD/CAM background colors like color gradient, lights and shadows)