I really like the mobile concept. I think (probably that is also your idea) that the icon arrangement of the second picture should be the same for the home, with an icon that opens the app gallery in the place of the unblock icon. Or better the icon for the exposť (open app list) in the place of the bottom lock icon and the icon to launch apps in the place of the top lock icon. I think it would be a really cool and simple interface with a clean home with a more elegant kind of dock (iphone and Android look almost the same). That would also keep the most important icons in the home (similar to the desktop concept of no icons on desktop) and other apps in a app gallery (similar to Android, and miming slingshot).
Now thinking about it maybe the bottom lock icon should be the home, and the top lock in the middle to launch apps. Back icon and exposŤ should be put somewhere else, maybe add 2 more icons next to the home icon and do something as it is in Android.
I really like the work you've done on Elementary OS Luna ! And I think you must also make an OS version which look like what you published above ! It would be great, and I think that people will like ! Just be sure to reduce technical specs of phones on which we could install it ! And, make friend with chinese manufacturers as ZTE and so on... They are more and more appreciated !