Close, minimize, and maximize are now close, minimize, and full screen, eliminating the extra full-screen control and consolidating the window controls in one place. Streamlining these and other elements of the interface means you can navigate the desktop more efficiently.
OS X’ idea of “maximise” was “some random window resizing nobody really used anyway”, so I’m glad Apple finally replaced it with something else. Too bad OS X’ fullscreen view is way too disruptive for my tastes to be of any practical use.
How damned hard is it to calculate the maximum window size and set the size of the current window to that? Windows has been doing this for, what, like 20+ years. I seem to remember it used to work on MacOS of old.
Full screen is not the same as maximize, especially on the Mac, where you get a new pseudo desktop for the fullscreen window. Fullscreen hides things I want to see. The only time I don’t want to see them is when I am watching a video, which is the only time I use fullscreen mode.
But no, instead of fixing broken functionality, they remove it, and update the UI with transparency. Yay!