Keith you are so right. A kitchen is the nexus between the house and the garden. I definitely like your idea of the kitchen overlooking the garden.
One of the coolest kitchen design features that I have seen so far was at the Commonground community in central Victoria. Just a really common sense design that they had was that all the plates and utensils and most of the other pots and so on were stored in the place that they dried. The benches underneath the racks all drained towards the sink I guess, so it was easy to clean up. No need for unhygenic tea towels to wash or whatever and everything in view so that the many different people that came through as wwoofers or guests or whatever could easily find what they needed to contribute to the process of food prep.
Sounds like for you a cool cupboard (with passive solar air circulation)would be an essential part of your Permaculture kitchen. You might even find you can eschew the use of a fridge altogether...
caretaking 14 acres of ridge and gully land at Huelo, Maui. 400-500 ft above sea level