@Joan_Sparky @maui
I see that PLCC LEDs and just remember something I had in mind to discuss with model makers.
It maybe possible in future (in fact it is already implemented in kicad viewer) that the 3d-viewer render use the emissive material property to render some “eyecandy”.
I.e: the emissive property is “how much light that object produces”. I believe it was planned to be used by lights.
So I have in mind that I could use that property in future to render some glow or put a light in that objects.So if you the the “LED element” with emissive it maybe used in the future… somehow… 
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