I tried adding some fake dust to the brick material (I split the normals, took the top normal and made it a mask for a dust image texture). I'd say a tiny to moderate amount of dust would contribute to the realism of the render 😃
Exaggerated for visibility:
Looks good!
Hello,
I never had too much faith in this method for LEGO parts, but I think you did a good job with texture and scale size.
I would maybe even scale it up a bit.
I tweaked the dust nodes, added black and white noise-based dust color, based the dust texture projection on an external "projector" dummy object to retain same scale, packed up the dust node structure into an easy-to-plug node group, and tested it by plugging it into mb_solid and mb_transparent materials. Here's a small test!
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