I would like to see the ability to make a "home" profile page based on a templating scheme similar to Joomla. On this page we could organize all the tab and plugin. There wouold still be the tab bar for getting a specific look at some info, but, a master "home" page that would organize all of the information. My inspiration for this idea is at deviantart.com. They have the best community profile setup I have seen. Here is a link to an example:
amihedgehog.deviantart.com/
Maybe this could even be something that was controlled by the user....