Great article. I can think of one more major improvement that would make the iPod interface much more efficient:
Use the Menu Play buttons to move up and down between menu items, one item at a time. This would allow for easier selection that one song you are trying to navigate to. Using the scroll wheel often results in over-rotating and shooting way down to the end of the list! My worst nightmare on my iPod is selecting a specific artist and song from 20gb of music, now try doing that while driving, and it becomes virtually impossible, leaving you with no choice but to select the highly popular 'Suffle Songs'.
Shuffle Better Than iPod?