* The Launcher, just the MacOS Dock, is a waste of pixels. I don't need to see a 128x128px Firefox icon all day. It can be hidden and/or reduced to 32x32px, but bad defaults.

* Hidden menus. Can be changed, but bad defaults.

* Top Bar.

* Left aligned window controls. It's not an option to change anymore.

Con: All the UX I don't like about MacOS. Pro: At least Edit->Cut works in the file manager. YMMV 100%.

Gnome3: Has a "launcher", but it's default hidden. I use meta/win key and type what I want.