Chris Howard has an excellent piece up at our sister site Apple Matters listing refinements for the iPhone. Highlights include:

Undo!! I lost a whole email when backspace got stuck on.
Rotate lock. Sometimes you just don’t want the screen to rotate. I lie in bed reading webpages. If I lie on my side, the webpage rotates to landscape (I prefer portrait most of the time). It’d be nice if there was an option to tap to lock the orientation. I know some apps I’ve seen have that feature. (Maybe a two-finger tap?)
WiFi sync. Wouldn’t it be nice to be able to sync your iPhone over WiFi instead of having to plug it in? Please, Apple?

There’s a lot more in the article and since we don’t want to step on Chris Howard’s toes or make the site owner unhappy we’ll just give you the link and let you check it out for yourself.

iPhone Improvements Wish List