1st - Add support of Destination (to avoid selecting 1 access point or even Default), just to select Internet and that's it. I guess everyone will agree it's convenient.
2nd - Add hint on press and hold buttons (when you click an on screen button and hold it pressed to see the hint what this button is doing). Will be nice.
3rd - And tap&hold feature less responsive, every second tap it thinks I'm tap&hold.
4th - Add home screen plugin and replace default email app. As of 5800 have only 4 home screen shortcuts for applications you need instant access to it, so it will be usefull. (Right now there is no even any notification on new email but sound)
Great application thought. I was waiting for it since I bought my 5800 :-)
Cheers, Alex