There is a current discussion in Sketching-Sculping-Modeling regarding use of construction axes as the location feature for Holes and Cylinders. This capability would be quite useful in being able to locate such features in proper alignment to other assembly parts and features that may be hidden behind a body, or simply to use existing hardware hole locations with projected construction axes to locate the mating holes in the body of interest.
The general concept is to have a usable point where a construction axis intersects a body surface, so that for use of Hole command, the surface is selected, then the point of intersection is selected, and the hole is created at that spot.