file sizes in explorer is my pet peeve, it should be a builtin. When I am coding and making small projects, I want to see the bytes. I hate that everything is shown as "1 or 2 k". and it is a hazzle to get access to and install of the mods that show bytes column. It should just be an extra column available by default 'Byte Size'.

Or automatic column width. Or even setting the same column widths for all folders (try it, it's tough without 3rd party tools). Or the UI hangs with network folders. Or the search that never finds anything. I could go on...