Could name a single specific feature that somebody who uses emacs for years is missing? (perhaps, a link to a video if it is hard to describe concisely would be

Could name a single specific feature that somebody who uses emacs for years is missing? (perhaps, a link to a video if it is hard to describe concisely would be useful) I've tried recently to steal some features from VS Code but nothing fundamental came up. I've discovered the gitlens' git-blame overlay feature but it is cosmetics (I use magit-blame). btw, the feature is available as blamer emacs package (just add the corresponding (use-package) elegant declaration to your .emacs). I use tramp to run remote commands using Org-babel all of the time. Obviously, emacs can edit remote files just fine too. What am I missing?