A Sleek Mode for Sleek
Adding settings/options to hide the search bar and the side-icons so you can have a completely clean view of your lists.
Reason being: The input/search bar uses up ~10% of my list display, it's noisy with it's example text, and I'm just going to use my keyboard anyway. This option would clean up the interface a bit for keyboard shortcut users, and efficient screen real estate use justifies leaving sleek open all the time.
Search bar: Add a setting that will default the search bar to display: none. It would show only when it's selected by pressing Ctrl+F. An alternative option could also be added to move the search bar to a search icon, say in the top right, to keep a graphic option to search. So options for "Show search bar:" would be "Shown (default), Icon, Hidden (Ctrl+F only)
Hiding side bar: Just adding a keyboard shortcut to switch the side icons to hidden - an expand right overlay icon could be added to the bottom left once the sidebar is hidden to reshow the sidebar in case the user doesn't know the command to show the sidebar. We've got shortcuts to show anything in the sidebar so always displaying the sidebar isn't really necessary.