Awesome things in GDE:
seamless scroll (?) to go from furthest left screen to furthest right, and vice versa (like you keep going one direction and eventually return to the main home screen).
A fast flick can take you from any home screen to the furthest boundary in the direction you flicked, and tapping the screen will stop it on the screen you tapped.
Folders?
Not experienced in these "Live Folders", so can't say what competes with them.
But there are folders on the desktop that anything can be dragged into (minus widgets).
Also, in the applications menu of GDE, if you press back, you'll see there is a All Applications folder, and you can add more folders. One of these other folders can even be the default "drawer" should you choose to set it to that when configuring what the Menu button or the drawer icon brings up when tapped. So you could make a "Social Apps" folder and when you press the drawer icon, instead of getting all apps, it would only show the "Social Apps", presumably only including the apps you actually place in that folder. And pressing the Back button would bring you to the Main Applications screen where the folders are, so All Apps is two taps away if you went that route.