>It does make me wonder why they'd bother with a property sheet for the screen.

My "expert" guess is that since its now a dockable window, you'd want it always avialable in your Window schemes. When no designer is up, they still need to show it so your screen edges don't go for a ride while its trying to figure out how they should look without the properties window. So instead of showing nothing, they must have thought, "Hey! Lets show the _screen properties!"