I am working on a more customizable home hub that can have a more granular control over accessories and actions. some of this comes from my own personal need as I have moved away from a Pi smart home to using a Mac to monitor and control and monitor Matter accessories and legacy 1-wire environment. As I work with accessories I do see how there may be more opportunities for a Mac based Home Hub, I think you are working on a stand alone one.

I have tried to reach out to Apple to get some clarification on why HomeKit is not supported on MacOS, the "use Mac Catalyst" makes no sense, why not just support it natively??