We could not for the life of us figure out how to make this a meaningful productivity tool. Yes, we had meetings here, and yes, drawing all over someone else's screenshare was actually useful - And building islands of data was an interesting mental model. It descended into messy chaos no matter what you did, and anything you would do to try and combat that undid some of the benefits of the canvas to begin with.
It was a lot of fun to hang out in as a multiplayer live video room, though, so we leaned into that with (relatively) more success.