I kind of love this, although I feel like I'd need to try it out to understand exactly how it feels. I'd even like to see a video if Zed could make one. It would be good to understand e.g. if the issue of "who wrote that?" actually affects things in practice, or any other weirdness or limitations.

I also kind of get why it's built into an editor! I wonder how it compares to e.g. https://www.coscreen.co.

The default method of remote work, with e.g. Slack and video meetings, I think leaves a lot of potential on the table. I wonder if a flexible collaboration system like this could actually be a lovely default method for many companies.