I like the idea of sending messages between agents (colleagues), but I'm seeing more and more approaches like these where we try (with agents) to emulate the classic corp experience. Yes, there is even a PM tool (https://github.com/automazeio/ccpm) that creates PRDs and works on them.

I'm a bit skeptical about replicating the (IMHO) broken process of big corporations - but it would he extremely funny if it turns out that this really works