A user I was speaking with proposed that Simulation Mechanical/Multiphysics be able to display the material color when a material is chosen for a part, instead of the parts of an assembly all just being gray (unless it has been assigned to a cad model and imported with it). So, for instance - say there was an assembly that you obtain from a step file. If you assign a material of gold to one or more parts, those parts would display in a gold color... cast iron a dark gray and so on. I like the idea, it would mimic what Inventor currently does.