Backup and restore
This functionality is incomplete. If we compare it with Android's Titanium Backup application, which backups from any Android device and restore (on any other Android device) with settings/configuratins and data and sync it on the cloud (Dropbox and Google Drive), the backup and restore in Windows Phone 8 is very basic (only provides pictures, videos, text-messages etc). Please provide us this feature so we can backup & restore the all or individual apps on multiple devices with setting and app-data.
Trooper - can you revise this to be more developer/API focused? (see my very recent comment to the suggestion you linked to).
....and email accounts configuration. So you don't need to setup all your email accounts everytime you change your devices.