One thing worth mentioning about that Apple logo in the middle of the menu bar—it's pure decoration. It's not a menu at all.
I love how in the public beta the apps were obviously still close to their roots of NeXTStep, yet through iteration and iteration they got better and more approachable and aesthetic, which then continued on for multiple releases and many years.
I remember reading the Siracusa reviews of the DP releases and being excited for the NeXT look and feel. Tear-off menus looked awesome to me for some reason. I was also excited about the darker blue highlight color in the Platinum UI. Like most people, I was wowed by the early Aqua demo (early Dock icons were all square with no space between them!) The garishness of it didn't really hit me until later.