1. Missed call or message notification on home screen
2. Direct phone access on home screen (since not buttons)
3. Can you save phone calls as contacts
4. Does the web browser highlight phone numbers for quick tap calling or save the link as contacts
5. Does the texting app highlight phone numbers for tap an call
6. Voice dialing
I really think Nokia does not appreciate how big the N900 could be with just a little more phone centric love.