One thing people have come to expect is the ability to share information they like within a social media environment. With Facebook it’s Sharing, with Twitter it’s Retweeting. With Reddit you can “vote up” content you like.
So, the question is, how would you do this with a Usenet concept-based service. This is an interesting, and crucial, question. You can’t have people vote up posts because that’s a direct rip-off of Reddit and people would see it as such. Meanwhile, Sharing like on Facebook is problematic. The best I can think of right now is some combination of “Starring” and Sharing. You might Star a post you liked, and Share it on your “Wall.” Or something. You would have to think of some way whereby people would feel like they were interacting with the content.
This gets into the whole concept of how you would represent Trending Topics. You would have to do in a dramatically different manner than Twitter and I think you could figure out something. I was thinking a pull-down menu that would be feature rich and give you all kinds of different options that either Twitter already has or are unavailable with Twitter.
Anyway, all of this is moot because I have no money, can’t code and don’t want to learn. But it is interesting to dwell on.