If the right person(s) are reading this, let me begin by saying the 2D/3D scatterplot node you developed is absolutely awesome. Seriously, it is beautiful and has amazing features. It lacks one thing though that I know I could use and would probably be of general benefit: The option to automatically color by density. I have written code to add a density column to a matrix, but this only works for two chosen columns at a time. If I could flip through columns and the coloring would automatically change according to the density of the points on the plot this node will have reached perfection (for me, at least).