I think the the key is to have multiple sensing and acting devices working together to create and act on a high-quality model of the interior environment.

My preference would be to self-host that model and the associated controls. I suspect this would require some meaningful compute capability in-house.

I would hope. There's some usefulness for alarm-level conditions to communicate with the outside world...but it is really disappointing how many devices feel the need to phone home about nothing in particular.