I recently bought a Nokia X3-02 touch & type, it's my primary phone and I LOVE IT. since I'm using it extensively, I found something that HAS to be added.
Instead of pressing "0" for space (which is placed in an awkward position), I recommend that you add a spacebar soft button on screen for me to touch, I find it to be more useful than the soft sharp button.
Best of Luck. Long live Nokia!