Ah, there were many moments when I would don the robe of D7000 High Priest and then answer a question on this forum. And usually would shoot myself in the foot.
Many of the odd, dark corners of this camera mechanism and the programming done by Nikon make understanding a treasure hunt. And more likely, a Snipe Hunt. It can seem futile at times.
Having been trained on commercial jets, especially the 747, I feel that much of the complexity is not needed. And I lay that on squarely on the shoulders of the Nikon engineers. Things aren't broken down into logical categories.
In my view, only the naming of these menus make sense:
Playback Custom My Menu
But the other menus don't honestly convey the contents:
What qualifies settings for being in one rather than the other?
My original question stems from a boogeyman that haunts all complicated devices — how to present a mountain of information in a small, coherent dial or screen.
I get the impression that in some of the pro Nikon cameras, many functions are assigned to a button. Given that we own the D7000, a big improvement would have been if controls and menus were tied to workflow. As it is, I can't comprehend the logic of much of the menu structure.
The User's Manual has my respect in that, by page 18, it has you 'in the saddle and ready to ride'. You are shooting soon after. And that is the best way to master the controls.
As for the Menus? Go to the nearest church and pray.