There are three little things I'd love to have:
1. Custom class for every element. Styling would sometimes be easyer.
2. Custom order of address elements. E.g. in German mailing addresses the zipcode is used at a different position.
3. And the ultimate thing: Controling elements from different element. E.g. click on a radio button to choose between "Email" and "Phone" and let the input field react. I don't know if there's a way to implement this without killing usability. But if they realize it, i will ask joomla.org for a sixth star...
Thank you for you review. We are already working on #1 and #2 of your request. Regarding #3, it’s current possible to assign action to radio buttons option, but right now, it’s just about show/hide other fields. So we will update this feature to make it possible to perform more action.