It's a cool feature and all, but it simply can't replace a PC. It's missing something big, and I didn't see it mentioned. It runs Android, a mobile OS, not a desktop OS like Windows. It can't be used as a PC everywhere, only where you take the dock and Bluetooth speaker, and have a monitor, keyboard, and mouse available, unlike a laptop, Windows tablet, or a 2/3-in-1 which you can bring anywhere you want and it's, well, a full PC. The Note 8 only needs the power of a netbook to do things that Windows XP can do (Many desktop games, the vast amount of desktop programs, etc), and yet it can't. I don't think a phone could be compared to a PC in any way. They are two different types of devices used for different purposes in 2017.
I am more than happy having a desktop and a Surface, and I don't even need a smartphone which would be about $500 every 2 years or so if I want it to stay secure.
I get that Samsung is trying to do what Microsoft's Continuum does, but Android/iOS and Windows just don't mix. One is for phones, one is for computers. Windows on phones failed, and Android on PCs would fail as well, for that reason.
Just my opinion on the subject.