In reply to Daniel.

I totally agree. A simple way to improve the current admin UI is installing the plugin “W2O Admin Dropdown Menu” which relocates the admin menu from left side/vertically to top of the screen/horizontally. I find this much more convenient since most programmes I use have horizontal menus with sub menues dropping down when needed. Yes, this simple plugin is five years old, but it still works like a charm. Try it out!