In my situation, I was willing to give up a lot of complexity in order to get reliability. Also, like many people who don’t have good use of their hands, I already used Apple devices because their voice support is so good. So I switched my critical use cases to Apple’s HomeKit, but I try to select only devices which work with both HomeKit and Amazon echo, because I prefer the voice recognition on Alexa.
Everything except the voice recognition runs locally, it’s been very reliable, and for the simple but essential use cases like voice control of lights and the doorlock, lights on a schedule, and a few sensor use cases it’s worked very well. Nowhere near as complex as what you could do with smart things, but so far my MFOP is over eight months. I use Lutron Caseta switches and some hue bridge based Devices.
You can see my detailed project report including equipment list both before and after in the following thread
Adding Home Automation in Phases: my limited investment strategy