There are two specific elements of Cel-shading that this is missing though. The hard outline border (which can be added or removed regardless of Cel-shading, Wind Waker doesn't have it), and the lighting of the shadows. In Cel-shading shadows don't appear naturally in a smooth gradient, instead they are clearly defined levels of darkness.
Hard Shadows.
http://marctenbosch.com/npr_shading.png
http://i7.photobucket.com/albums/y279/aun_devanum/Cel-ShadingExamples.jpg
Amd to really make you guys think I'm crazy, Borderlands isn't cel-shaded either.
While I don't dislike Cel-Shading, I think I enjoy the look of the game more as it is.