hello, I think you should take independent labels displecement order to control the displecement independently of each material, since it is more complicated to handle maneral general options tab of VRay, and well, which all seek to is faster than previous versions including the first version that came out, and is more stable, since in many occasions when I was a scene of heavy materials with got me a displacement of sketchup bugsplat never know how I could fix it
Re: some of my wish list
Displacement is really something that should be done on an object level, not a material level, as it is done in Max. The hope is to transition to that kind of system for the next full version of VfSU