Hi,
personally, I think an addon like WP’s "BuddyPress" would be a huge addition for MODx. For those who are not familiar with BuddyPress, check out
http://buddypress.org/about/story/. It’s a package with which you can create your own social network site.
Now, I know this probably is a LOT of work. But the possibilities with an addon like this are just
endless.
