No, it’s not simple. I tried OpenNest for the first time two days ago:
I got some useful results but stopped before I got Unroll to work. Part of the success I had was because I looked very carefully at the data trees to keep them synchronized.
P.S. Looked briefly at your current code and see that you have switched to meshes (Weaverbird)? And are still using Bowerbird instead of OpenNest Text.
And still not using the standard GH component for Flip Plane?