Can you elaborate? I found it very easy to interact with once I learned how to use the tooling (busctl, d-feet, etc). I also don't think I would say it's desktop-focused, it was designed for that use case originally, but it seems it can be used by anything else that happens to use a similar OOP-based RPC design (and it seems systemd is one of those things). Is there another replacement that's of a smaller scope that would cover all the use cases that systemd needs?