I wonder if any of those cover switching devices. You used to be able to say, "Hey Google, move that to the kitchen," and whatever you were listening to would stop and continue in the kitchen. It still understands the command, but then fails with an error. That feature was something that I used every morning as I moved through the house getting ready for the day.
I can't point to a single thing that these devices do better than they did two years ago, but I can list several features that were important to me that are now either broken or missing.
Honestly, my feeling is that using Google Home is asking for trouble and frustration. It already barely works, but it's not hard to imagine some future where the company that built your front door lock is ordered to stop providing service by some court that finds it in violation of a patent.
I can't point to a single thing that these devices do better than they did two years ago, but I can list several features that were important to me that are now either broken or missing.