If you like this stuff, check out Thriving Systems Theory and Metaphor-Driven Modeling.

It takes the 15 properties and integrates them across system choice centers. Some interesting things fall out of it:

1. Levels of Scale -> Stepwise Refinement 2. Strong Centers -> Cohesion 3. Boundaries -> Encapsulation 4. Alternating Repetition -> Extensibility 5. Positive Space -> Modularization 6. Good Shape -> Correctness 7. Local Symmetries -> Transparency 8. Deep Interlock and Ambiguity -> Composition of Function 9. Contrast -> Identity 10. Gradients -> Scale 11. Roughness -> User Friendliness 12. Echos -> Patterns 13. The Void -> Programmability 14. Simplicity and Inner Calm -> Reliability 15. Not Separateness -> Elegance

http://www.amazon.com/Thriving-Systems-Theory-Metaphor-Drive...