The one genuinely great aspect of Ubuntu's defunct Unity environment was the "Heads Up Display" (HUD) that made searching and autocompleting through the File/Ed

The one genuinely great aspect of Ubuntu's defunct Unity environment was the "Heads Up Display" (HUD) that made searching and autocompleting through the File/Edit/etc. menus in every (supported) program as easy as hitting a hotkey and typing. I am a much bigger fan of Gnome 3 than Unity, but I think this should be resurrected as an option in every OS/DE. Anecdotally, I hide the header in Google Docs/Sheets most of the time to save space, and have come to rely on the Menu Search field in the upper left (Alt+/, which works regardless of whether the header is shown) for things like renaming the doc, accessing conditional formatting, etc. Basically the few commands I use regularly which don't have a corresponding hotkey.