- Wi-fi finders
- QR code readers
- PIM tools
- ebook reader supporting ePub format
All these things would make it far more useful. Nintendo could open up a kind of DSiWare shop where these things were sold (hey, hang on, they already have one! ;)) and given Nintendo's desire for control they would presumably have to vet every entry, but having said that there's already a small but thriving homebrew community for the console that could be tapped. This would be an enormous boon to the little console and see its use other than just for games. The screen is fairly low resolution, but given what has already been achieved I don't see this as a problem, people just need to think around it. Just think, if there were an "official" DGP Player (Nintendo's DS video format) then there could be sales of movies (in YA format) on the DS shop too, perfect for cartoons and the like for little Johnny in the back of the car given the DS' long battery life. Everything just needs to play from the SD card, to ease up space on the main machine. Best of all, this would get away from the shadowy world that is homebrew currently, relying on third party "dodgy" add-ons like the acekard 2i I have that could potentially be used for warez. Please, please, do it Ninty!