I want to make my mobile phone the center of my digital lifestyle. It is always with me and always on.

Terminal mode integration. I like where Nokia is going with this but I hope the platform is open enough for hackers to roll their own.

Home Automation: I want to have secure communications with my home network that lets me lock / unlock my doors. arm / disarm my security system and control my home media

Enough horsepower and IO capability to expand into light laptop work. We're already pretty close to this with N900. I want to have a dock that lets me hook up a monitor and keyboard for quick email / notes. Sort of like Palm's failed Foleo but with HDMI graphics.