I've had my eye on "Twist" (from the same developers as Todoist). Seems like a cleaner, thread-focused version of Slack. If I were starting my own business tomorrow that is what I'd use, but sadly I'm stuck with Slack and Teams.
I have no desire to use their product. It doesn't do anything new, except maybe the way the interface is structured. If that's so great, why isn't it immediately obvious?
This is the modern internet. Make a killer demo. Make it fast. Make it fun.
This is boring.