I'd still really love integration with contacts, like iChat. Instead of adding pesky nicknames, I just would like it to mask the names with my contacts names.
I'm pretty sure it's possible to access address cards with the SDK, the only limitation I see right now is that I don't believe the full address cards are synced, because the iPhone never shows other "fields" such as screen names. However, there is no excuse for this anymore since there is a contacts "app." It should show every piece of info in your address book.
Other than that, September should rectify my only other issue, which is obviously not AOL's fault.