> High Sierra has the same lack of 'internal polish' as iOS 11, and as a result, it's going to leave a lot of users scratching their heads in anger.
I've avoided upgrading to macOS High Sierra just to wait and see how it turns out. I'm less cautious with iOS, and am currently frustrated by two things in iOS 11:
1. The WiFi/Bluetooth radio behavior in Control Center (to compensate I use Siri to turn those off, but that's cumbersome too). The recent beta of 11.2 has a popup announcing the new behavior, and that sounds like a terrible idea by itself. Instead of giving more control to the users, Apple, for my needs, has made a terrible decision on this one. (Of course, I have read comments from other people who actually like this new behavior).
2. The bloat in the OS, which causes terrible lag in different screens (including Settings) when it's running on last year's device (an iPhone 7). I don't play games or do video editing and other activities that might need more RAM. My usage has been the same as it was on iOS 10, but the device is sometimes a pain to use. I'd expect such slowness in a device that's three or four years old, since Apple doesn't seem to optimize for older devices, but last year's device??? I've restarted the phone, reset it, updated to the latest .x version as soon as it's been released, but nothing has helped (my flash storage is less than half used - so it's not that either).
Overall, I guess I'm just echoing what some others have said over the last few years - the software quality and "it just works" mantra that Apple used to take pride in is gone. If anyone in Apple were to ask me what it should focus on, I'd suggest something like two releases on the lines of Mac OS X Snow Leopard, which was primarily under-the-hood changes to optimize things and make it better and faster. I'm certain iOS needs this kind of effort badly.
FWIW, I've also provided this feedback to Apple at apple.com/feedback and I'd suggest others who're concerned or have issues do the same.