A "Custom Layer" option
With Layering in Geogebra, there are only 10 available layers, 0-9. There should be an option within the program to add or remove custom layers. Say for example, I have a 3-D collage of up to 36 geometrical shapes. I would assign each kind of shape to it's own layer (cubes in "layer("cube"), tetrahedra in layer("tet"), isocelese triangles in layer("icotri"), so on and so forth. Giving the user the potential to create an unlimited number of custom layers would be extremely useful in studying the underlying geometry of different kinds of number patterns.