Being able to search our uninstalled games when “Installed Games Only” is checked would be useful. Because I often want to install a game, but I don’t want to have to unhide all of my games and then search for the one I want.
To get around this issue, when searching, I click the button “Search Lutris.net” right next to the search bar. 9 times out of 10, this is sufficient, because most games are listed on the site. Hope this helps.