It's not like Slack is even that well-designed anyway. By design, it results in conversation fragmentation, with similar conversations happening all over the place. Once you have more than ~5 employees, people have a hard time keeping up.

My dream work chat app:

1. Conversations happen adjacent to internal documentation, with agents constantly writing and updating the docs based on natural human conversations

2. Create topic threads instead of channels. When you open the topic, agents help you identify similar topics that have already been discussed

3. DMs are essentially banned or strongly discouraged because they contribute to information asymmetry (just spin up a topic and scope it to the relevant people, but only for sensitive discussions)