1) I feel the growth in the number of users (and rooms) has overwhelmed their notifications-based system;
2) the “enjoy the live conversation or nothing” approach they have works great for content creators (which is key), and for people that enjoy serendipity (which is great), but makes it hard to use for many users that may just want to enjoy the content and are not in creator mode at all times.
A lot of the great stuff that happens on CH just happens at the wrong time of the day.
Adding DMs was a great way to help translate participation in rooms into something more valuable and that continues to bring value beyond (outside) CH.
I suspect next steps are going to be in the direction of:
1) supporting the many people that would be willing to trade interactivity in a room for greater flexibility to listen to it passively but at any time;
2) introducing a content recommendation system that allows users to discover the right content that is not live;
3) bring on a user rating system that relies on more than just the number of followers.