Restore to Default / Save / Profiles
Be able to restore the home to it's default configuration. It's so easy to accidentally move stuff and it even puts you off moving items just to interact with them as it will be a pain to put them back. Having an edit mode or being able to lock items in place somehow would be very useful. Having multiple profiles could be really cool too - I could come up with different layouts I like and be able to switch between them depending on my mood.