Vray Material as submaterial

[fooprobe]

Obviously it would be best if things like displacement and emissive could be added to the new Vray Material (which is a huge improvement by the way, thanks for that). But if that isn't feasible, it would be nice if the standard material could have a submaterial option - so if you already made a Vray Material and just wanted to add displacement, you could make a Standard material and just load the Vray Material as a submaterial, without having to completely reconstruct the material in the VrayBRDF layer.

Anyway, if the plan is to get the Vray Material to be comprehensive, that would be much better.