Being able to move files in and out of zip files without decompressing and recompressing
Always on top windows
Window snapping
Multiple desktops
Launchpad-like app launcher
use all cores
change the system font
change the menu bar size without needing to change the system resolution first
focus the follow mouse
change my mouse button order
read files from MTP devices
Column View in Filer
"About This Computer" Window with basic Informations about the computer and -> "System Report" Button wicht lists all possible information about the computer.
Disk Utility
Dashboard
When previewing images, use the arrow keys to jump to the next/previous image.
Activity display
Automator
Network Utility
That during a new installation the own files can be spared from being overwritten.
Third-Party features it would be NICE to incorporateEdit
Bartender-level flexibility in menu bar configuration