I don't think we need anything like 'Stories" in IPB, I still can't figure out what the Status Updates age good for! My members seem to get confused and try to post regular posts in the status updates, they treat Blogs as regular posts instead of creating blog type posts...I'm sure stories would just be misused as well! As a matter of fact, I wish there was a way to convert status updates and blog posts into regular threads, but that is a different topic!
I strongly believe that forums need to COMPETE with social media but NOT BECOME social media!