With the selection filter set to "geometry," user should be able to select a visible surface by clicking on it, even if there is an edge hidden behind the surface under the cursor. Current functionality is to select edges whenever possible, regardless of how many surfaces are in front of that edge. The edge could be completely hidden from view, behind a huge surface that fills the screen, but if it is under the cursor, it will be selected instead of the surface. This current selection functionality could be enhanced by prioritizing selection by z-depth, where the geometry closest to the screen is selected, since this is what users typically expect.
