Mac I have another idea, actually an old idea of mine that I had forgoten about. It involves puting ghost actors in in the base cr2, then injecting the geometry and channels via a pz2. It adds a bit to the size of the base cr2, but takes care of the parenting issue, and I think makes the cr2 very flexible. It's a one step solution as you would only have to apply the pz2. I will test and develope the idea a bit before I post more details, and hopefully an example.