One of the coolest apps I saw on 1.1.x was was definitely hidepod. Considering 2.0 was released almost a year ago and it has yet to be updated, I think a dev should step in and make an appstore version of the app. Think about it for a second, it could have:
-Wi-fi syncing. This is a major feature used by many file transfer apps in the appstore. This would allow you to put your documents, songs, and videos into hidepod.
-Text editor. It could have a built in text editor/creator for writing secret notes or editing documents.
-P2P transfer. It could have an option to transfer files from one idevice to another.