I just built a vacation home from the ground up and specced the "smart" features myself and did so very carefully. I've learned the hard way because I was already "orphaned" when I bought my current primary residence which had a high-end 'state-of-the-art' home automation system that was designed into the walls by the original owner. Unfortunately, it was cutting-edge tech for 2001. The original manufacturer of the s…
I think your solution is good but paranoid in the wrong areas. You’re probably gonna get bit by 25 years from now is the dependency on current gen Wi-Fi. The thing you have to own is the transport layer and all the devices that directly interface with it. Then all you will ever need to replace is the bridge to your “control plane” — apps, HomeAssistant. The golden solution (for me) is RF. 100 years from now you will…
The devices that I'd be interested in using RF with (for instance, power sockets) generally accept commands over RF but don't report status back. This makes some scenarios unreliable as automation doesn't know the status of the switch.