Personalised profiles - can't believe this still isn't available.

Portrait SMS

Portrait Browser

Auto disconnect 3g/internet connection

Better media player options with sound off when disconnecting headphones

More integrated SMS with auto connect of MMS APN

Improvements to battery management - still

Would be nice to see some more games to show off the capabilities.

Improve the phone capability

Voice control and voice calling

Text to speech and speech to text

Ability to save my contacts on the N900 to my sim card!