First.. this is about NX (handheld)
1. WiiU like power
2. TV out (HDMI)
3. Better touch and 3D
4. More type of apps
5. More sensors (gps. and the thing in the WiiU sport "sensor")
6. VLC player app
And mayby it's also time for Nintendo handheld to get phone capabilities..
(that would offcourse deamand a more "android" like os.. but I don't think that would be so bad..
I don't mention games or much better online.. becourse we know that is a given