Wow, nice panel work

That sail could hang in a museum of modern art somewhere...
Seems to me there are three aspects of a great kite:
- Aesthetics: Shape, panel layout, color. You have a great example there.
- Aerodynamics/flight performance: Some of the best flying kites can be pretty plain, especially prototypes.
- Craftsmanship: Projects that are well built tend to work better and last longer. An attractive kite layout built by a master craftsman is a thing of beauty. Quality of materials is important. A craftsman will use the best materials they can for the task at hand.
When all three converge you get a truly great kite.