I've installed the latest and greatest MacOS on both my MacBook and my iMac (that's Sierra for you folks keeping score). This update continues the trend of MacOS updates which seemingly offer few new features that I either notice or use.
Honestly, I've only noticed two new things (yes, I know there are more than that). Here are my thoughts on them:
I like the Siri icon, but Siri on Sierra just gives more places on which to not use Siri.
My first attempt to use Siri on my Mac (to find images of kittens dresses as puppies) failed. And when I tried to find the current temperature using Siri on my iMac it told me I had to turn on WiFi first (so Siri could determine where I was).
I know Siri can do many things, I just don't want to talk to my computer. Call me crazy!
Stand up, Volume changer, you're on the job!
The only other thing I've noticed is the new horizontal orientation for the volume slider. This is a minor change and I hate it very much.
Sierra is pretty much like the last few OS updates: it continues to do what I need to do without much fuss and it adds features I have little to no need for. It is a free update though, so I don't mind.