One definite UX improvement over the past 25 years have been command menus. In the most simple implementation, press Ctrl+P start typing to filter a list of commands down and hit enter.
If only this worked properly in Excel! It has them, via Alt-Q, but there's always a delay before it activates. And you can't just press Enter to accept the first result, like most type-ahead command menus; no, you have to arrow down once, or Excel stares blankly at you.
