Maybe bigger icons and a wider screen.
Also when using actual keyboard it should be centered so when placing thumbs over keyboard thumbs should be aligned already. Lots of mistyping because of this, I feel like I have to reach over with my right thumb to type.
Other than that I really like the phone. Still in the 30 days trial and if Verizion comes out with the HTC Passion within my time frame I may have to think it over. I hope they do come out with it so I can compare and make a decision.