Is there any possible way to blend (nest) multi-sub object materials with a second material to fade between each other?
Neither Blend nor Layered Material works as you know? Is it currently not possible?
Hi. AFAIK this is unfortunately not possible at this moment (but I would welcome to be proven wrong).
I hope It’ll change soon, since this would make many things easier to accomplish, like fading out objects with mso-mtl, or overlay a toon-shade/wireframe on multiple objects etc. etc.
Maybe you should make a feature request for the new year?
Regards