We’re in the same boat.
Communicating meshes between software is hard enough (currently we’re working with Rhino, Unreal Engine and TwinMotion, and the scaling/mesh normals is a pain to work around), but the materials is giving us a much bigger pain.
I was hoping PBR materials could be a nice standard to work around but I found the same as above, that some properties are exported, and others not.
Just adding my support for this, hoping that it could be added soon.