I like that idea, that would save us some time and be very convenient for our workflow. Some of the cells will indeed be duplicated so that’s a small drawback. But on the other hand, sometime we would like to “hide” a specific part of the mesh linked to one label because the user is editing another label and want clear feedback on the 3D view. In that case, having only one mesh with shared triangles makes it difficult to hide just the specific part of the mesh properly. Because we have to choose one label or the other one for the shared triangles, sometimes we get big holes on the part of the mesh that is still visible (don’t know if that’s understandable, I can send some snapshots …). With multiple closed mesh it will be really easy to control the opacity/color/visibility for each part independently.
Once again, thanks for the work and dedication, looking forward to the next changes and glad to test that if needed 