One thing I'd recommend is to focus even more on dynamically updating the experience depending on the user's system resources. For instance if the browser start

One thing I'd recommend is to focus even more on dynamically updating the experience depending on the user's system resources. For instance if the browser starts crashing with too many video/audio streams, or bandwidth makes video basically useless, you could allow the user to participate in a conversation audio-only, or automatically turn off background audio to save bandwidth.