Yes, I want this functionality as well. It's foolish not to be able to use all the wonderful Wordpress plugins that employ the Wordpress member database such as membership plugins like Wishlist Member.
Why don't developers see the potential in this? Most sites are run on Wordpress and want to ADD a forum to their existing site and member database. NOT re-arrange their site and mickey around having the forum control the logins etc. Makes no sense.
I agree. I already have a vast user database with WP+BP and don't want that to change. I've read comments here that say to use XenForo instead of BuddyPress, but that makes no sense. I run a social network and the forum is secondary to that. And last I checked, XenForo doesn't have activity streams, groups, and the other features I need. It's a great forum software, but not a CMS.