I love the web 2.0 vibe.
As for killing the official threads... It doesn't seem like a good idea at all. We have lots of active official threads right now and they're zipping lots of news and updates. Getting rid of the official thread will lead into an explosion of updates of same artists on the main forum. I also don't understand how the social groups can turn into an artist discussion or "let's continue our britney 'radar' discussion over the group" LMAO. It doesn't make sense to me.
My suggestion?
Keep the official threads. The first post in each official thread will be updated with a link to where the last update is posted. People will enter the first page on the thread, click over the link, it will take them to the "updated news"... the new discussion starts from there. Just like old school with an extra click. I've already implemented my idea on my "Madonna" thread for a demonstration.
P.S: That means the thread title should redirect to the first page/post, not the last page as it is now.