I went ahead and built a barebones version over the weekend. It is now published here on Product Hunt, by the way - https://www.producthunt.com/prod...
Would still love to hear any feedback or suggestions you may have.
Make it a mix between Reddit and Twitter, add upvote, sort replies by votes and show most upvoted stuff on home page
Instead of following subreddits you would follow people (you can still discover new content with retweets)
Notaku
LiveDemo