It feels, somehow, less personal. Where Slack rooms felt like digital _rooms_, this gave me the feeling of an office bulletin board. I'm imagining being a new employee at a company that is fully bought in on Struct, and somehow I feel like developing personal connections with my coworkers would be more difficult. I don't really get why, that's just my first impression from the demo.
Otherwise, as a currently funemployed but past SV eng leader, I would have loved to have had this at my last company while dealing with all of the communication chaos that entails.