This was the only other shape that was made as a prototype:
All of the other shapes that were designed in CAD were never produced as the face shape has been so successful and I wasn't really satisfied with the way the CAD drawings for other shapes came out. The next shape I was going to release was a heart shape, but I wasn't happy with the CAD drawing yet. The face shape came out much better than a CAD drawing could have represented so CAD may not be the best way to come up with new designs.