Suggestion to add previous wallpapers would be a nice node to the lifetime previous Xperia users. To prevent bloat-ware it would be an optional download. Link out to "a clock" because it's so cool. I want the option to "Upload your own" Live Wallpaper with the prevalence of Snapchat it's a great way to personalize my own screen.
Here is a photoshop I created just as a mock-up idea. Or you can make it horizontal-style like how the new Xperia Home is set up.