I've always really liked the TOS shuttlecraft, and anyone who's ever really studied it, drawn it and tried to make propr models (3D or physical) know it's far from being a simple shoebox. It has all sorts of subtle curves and odd shapes. The "full-size" (actually closer to 4/5) mock-up of the exterior is an awesome replica in its own right and despite some of its production shortcuts it's a far more interesting and complex design than any of the shuttle mock-ups TNG started out with.
