I think a happy medium like signal would be much better, slack is an immovable part of much of the (white-collar) business relationship world now but it'd be nice if there were assurances of secrecy and security in communication as 24/7 cyberattacks rather than a company whose security is based solely on promises rather than zero-knowledge systems. Signal has had far and away the best cross-platform messaging experience of any client I've used in friend groups but moving to a slack-like system alongside what exists now would be much appreciated to the noisy channel approach.

Shared information like code and files are increasingly important for keeping people and agents aligned, and "AI Native" businesses will become even more code heavy, so that makes sense.

Why does Rust feel like a bad choice to you? In my experience shipping med device software, it's great for keeping the code that teams write cohesive and correct