I'd like to see in the N900, better input options in pen or voice.
If they are not going to move forward with better writing recognition, then why not implement an alternative virtual keyboard?
I know the community has already shown variations recently to accommodate other languages. I realize FITALY is licensed but I saw a link to a windows guy who easily mod'ed to a FITNALY layout. It is renowned for its optimized input.

http://www.aximsite.com/boards/utili...ive-bucks.html

The QWERTY layout is just plain sad after all the years and inhibits good/fast pen input.

I can't example much for the cause of 'voice input', but I have seen a few very promising options in recent years.