Hmm, I'm not sure where you got these numbers, but none of them are correct. Ten hours of downtime a month? We measure this pretty obsessively, and haven't had that much downtime in a three year period.

I appreciate the sentiment for what you're saying, but our direct user growth has surprised even us (again, not sure where you're getting your numbers), and Signal Protocol is now on over two billion devices.

If your major concerns are reliability and user growth, I think federated protocols are likely to exacerbate rather than improve those conditions -- as we've seen with XMPP historically. However, I would love it if you proved me wrong. Signal can be deployed in a federated environment today, let me know if you need any help setting it up.