Is there any interest in building a private community platform?

My brain is selectively looking at topics and threads that are targeting social media addiction, twitter, etc. Ultimately I think these things are not going away but every decade we see a rebalancing as we start to move to new behaviours and new platforms. But that doesn't mean the old ones leave our psyche. If anything they become a staple of our daily lives. I want to try break away from some of this. I find Twitter useful but only when following a small subset of users. I think moving to something private with people you know might be a better alternative.

If it's of interest let me know. I'd really like to build it with people.