1. I never said anything about people customising their desktops. I specifically mentioned the default icons in XP and OSX. Customise all you want, but change it back before you want me to fix it.
2. It's a bar that represents the section of the page you can see, it's called a scrollbar because that's the only thing you can do with it. Once it can do more than one thing we should change its name, call it the XP-Bar or something.
What's easier than adjusting the zoom by adjusting the widget that represents the amount of the page you can see?
I'm suprised they didn't mention this in HCI class really.
As for the alien concept, everything about WIMPs we've learnt, I doubt windows/mac users would intuitively understand drag'n'drop saving. Of course half their scrollbars are still broken in that they don't resize and thus only indicate the position not the area.