It would be nice for the address field to have all items be shown with an asterisk when the addresss field is a required field. I had a user fail to complete the form (didn't enter the country) and when she submitted it she bounced back to the form and didn't understand why, since the country field didn't have an asterisk. Which brings me to the second point, the user also didn't notice the error message describing why she was bounced back to the form. It would be nice if there was a more noticeable error message.
Deb