One thing that seems to be missing is any kind of feedback from the touchscreen. It would be cool to make the speaker "thock" and/or maybe the vibrator jump momentarily upon each valid touch. That would make it more intuitive.

Come to think of it, maybe even the keyboard could benefit as well.

Of course, we could make it selectable so it can be enabled only if desired.

I have no clue (as yet) where the touchscreen is processed, but it's likely in a binary somewhere. But I bet Palm has included an event trigger somewhere in there. Anyone have any ideas?