I'd like to see a "Personal Status" page or some such idea. Basically, it would have the ability to connect to all sorts of places that keep track of information about me to provide dynamic info about what I've been upto.
It would include things like the last 5 bookmarks I added to del.icio.us, my presence in AIM; Jabber; GoogleTalk; IRC channels, the last 7 songs I listened to as recorded by last.fm, the last 3 blog post titles, the newest 5 titles from blogs I read from bloglines.com, the newest 2 podcasts from my podnova.com account, my latest posts on a few different phpbb forums and room for modules for anything else.
I picture the config being something like setting up a profile in a phpbb forum. Is this something that would be a good feature for WP or better off being an entirely different program.