But it's a point for usability. Since XEROX we have had windows and drop-down menus. Every body knocked off that model. Lotus came up with the chicklet scheme and for some folks it's very usable. Apparently it must be uber user friendly for Apple to adopt it being they reign supreme on usability.
The only real significant UI departure in recent memory is Touch with it's stuff strewn everywhere model, which I guess iPhone / iPad couldn't well adopt with MS making so much noise about it.
So I guess as we go onward and upward, we're bound to see the same interfaces over and over so long as we have a 2d plane to interact with. Will 3d holographic displays fall back on these ideas do you think?