Battery life:

* Newer kernel with CFS;
* Suspend-to-RAM included & enabled by default (see n800-s2ram project);
* PowerTOP debugging, also in SDK (works with QEMU?);
* Solar-based power over LCD screen (invented by RuG);
* Teaching users how to improve battery life of Li-Ion battery;

Connectivity:

* 3G functionality in Europe;
* Either no GPS, or a good GPS;

Performance:

* OMAP3;
* 256 MB RAM;
* 3D (for visual effects; related to usability);

..and last but not least for its the most important of an embedded device..

Usability:

* Not 20 applications providing the same functionality (multimedia wise a good example is the many audio and video players); Linux-related problem;
* Replace Navicore with Nokia Maps 2.0 port;
* 3G...
* Hildonized Evolution port, or hildonized maemo PIM;
* Usability-related improvements on the software part (Diablo was an improvement in this regard). Fix important bugs. Realize the huge importance of this.