why autodesk doesn't improve 3d snapping system to allow:
copy, move
sketch or
without having to define a workplane everytime
using inference system like in formit or sketchup will be perfect, they use a snap options like:
perpendicular to...
parallel to...
and they are using a color for every type of snap
blue for z axis
red for x axis
green for y axis
pink for parallel or perpendicular.
all this system is adapted to snap on objects and workplanes thar are closest to the view angles.
these options will be really great for working on families modelisation