One of the great things about macOS is how many customizations there are to improve the user experience. Even better, you can go beyond System Settings and change hidden options from the Terminal. But, why bother having to input these changes from the command line, when the wonderful free app, TinkerTool exists? A personal favorite hidden option that can be enabled from TinkerTool is to disable animation and delay for a hidden Dock.
I discuss many more hidden macOS settings accessible in TinkerTool in my latest post: Enhance macOS Capabilities with TinkerTool
What are you all enabling in macOS hidden settings?