I use Mycroft with the home assistant vm running on Proxmox. I’m surprised how easily they integrate. And when the internet goes out I can locally control things from a laptop.
I'll have to check out the specifics - but your full setup does not seem like an improvement for me. If alexa is down, I can open up the app on my phone for each smart device manufacturer and manually control things that way. They only need my local wifi network to be functional, internet access not needed.
Can a raspberry pi handle the server functionality I wonder?
