I only now discovered this useful feature, which draws animation arcs in 3D for the tip of a selected bone (Pose mode, select bone, W, Calculate Paths). IMHO they are easier on the eyes than Ghosting the bones. (How long has this been available?!)
Q:I’m probably dreaming, but is it possible to edit these arcs and have the bones’ rotations adjust accordingly? Would be great for tweaking animations. Thank you.