It would be very useful if there was a way to toggle the display of corner nodes of all polygonal geometry (like meshes, fills, polylines etc) when unselected, on both plan and section, to be able to easily locate and snap other elements to them. I would probably never want them to print, and I would only want them to be visible on occasions, so the ideal solution would be a new on-screen display option.
It is particularly important that this should also work with dwgs placed as drawings. Currently the magic wand doesn't function with placed drawings, so in order to accurately trace contours manually, you need to find the nodes. Thankfully ArchiCAD can snap to the lines and intersection points in dwgs, but locating them by eye can be tiresome as they can sometimes only be found by slowly moving your mouse across waiting for the cursor to change!
Finding the nodes is much faster when you have a target to aim for!
The example below is typically what you might see in a section through a mesh, or perhaps a polygonal wall on plan. The nodes in the upper object are very difficult to locate by eye, especially when the connecting lines are at a similar angle.