macOS is mature and they have no clue on improving it anymore and that's a shame.
the way i see it: they're paying the price for not wanting to merge the laptop and tablet lines.
W10 invested everything into creating a hybrid platform which can be used both like a traditional computer and a touch input device (like a tablet to be clear).
Being apple mainly a hardware and service company (the OSes being all for free, and thus only a means to channel those HW/service sales) they push customers into buying as many products as possible, also by creating a pleasing ecosystem in which devices cooperate and work seamlessly with each other (unlock the pc with the watch is just the latest addition).
but let's be honest, what's the sense in having for example, both an ipad pro and a macbook? hardware wise they're so close (ok, different architecture, i know) that one single device would be much more convenient!
it sounds cool that i can copy/paste between pc and tablet, but isn't it honestly easier to just have one device to rule them all?
obviously apple doesn't want that because it would hurt sales, the approach is rather to make the tables more productive with each iteration, but lacking that pc feeling so that one will most likely still need/want both.
All this to say that macOS is not going to change dramatically over the coming years. it's a mature platform, tied to the traditional ways of interaction with a computer.
This makes me sad, because after decades with using computers i NEED to have folders, desktop, multiple windows, that's how i mentally organise files and workflow (space, patterns, hierarchy), it would take so few to add that to a tablet...