This is really fantastic behavior, but content - the actual list items they show - is much more important for user experience. Why should "Amazon Cloud Drive" b

This is really fantastic behavior, but content - the actual list items they show - is much more important for user experience. Why should "Amazon Cloud Drive" be a "Department"? In the wild, I suspect I would quickly glance at the top level items and decide that this menu isn't useful for me. If I were searching for something specific (presumably the main use case) I'd jump over to the search bar. If I were just browsing, I'd jump to one of the 100000 other random things to look at on the homepage. Somewhat related: I wonder if they thought about varying the top level list items by user.