I was thinking of adding an IP tracking service to it. Where all you have to do is register on the site and it will track your IP address each time you connect to it. Is that something you guys would be interested in?
What other UNIQUE features would you like to see that you don't see on other what is my IP websites?
I can add other features from other popular IP sites as well.. but I won't add something just for the aesthetics.
It's good to see that you're updating your site, let's us know that everything is up to date. I think a IP Address Locator, and Trace Route Locator would be good addons.