>>zeveb+(OP)
A mobile interface for Emacs will be killer. I heard about Orgazly and tried using it but it's a very slow interface. A mobile first design even with limited features will go a long way.
Mobileorg was that app for a while but it's development stopped and it's no longer usable.
>>driedd+dm
Agreed. Don't forget about tablets too; I'd happily pay for someone to make Emacs usable with touch gestures and optimized for touch use (e.g. with a clickable, context-aware button row).
>>TeMPOr+Vn
I'm waiting for Emacs to run natively on ChromeOS (or Android) so I can get a Chromebook. (I'm not willing to install Cruton or any of the native Linux hacks on a chromebook).