[feynman]

Each time one opens an MXS, the previous sorting of objects and materials is lost.

Also, to make the Materials list more navigable, one should be able to group MXMs. Often in industrial design, one has, let's say, very many steel powder coating materials where only their NCS colour is different. If one could group materials, the clutter and scrolling would go away.

Then, if one could group MXMs in such way, one could maybe change a parameter or texture on the topmost material - and the change affects all materials in that group. That would save so much time.