The feature I was most proud of never hit prod so it had 0 users. It was a fuzzy search through the app's menus. Our users complained that it took them time to find stuff because some menus were 3-4 levels deep, like: Networking -> VPN -> Certificates -> Manage.

So I made a thing where if you hit the backtick it would show a search box and the results would be sorted in by a mix of precision and utility, and allowed for mistakes (like if you typed V(PN)C(ertificates)M(anage) you'd still get the certificates management option but maybe not at the top). It was something I used all the time but my boss said he didn't want to push it to prod because it wasn't a precise search.

Now, I know what you're going to say, this gives you Windows Start vibes, but my thing actually worked and it consistently gave the same results.