The sharpest feature

Is the sharpest feature the one with the most beautiful interface? Is it the one with the most impressive technical implementation, elegant under the hood and rapidly responsive to input? Or is it the one that solves the problem most directly, even if its appearance and underlying implementation are inelegant?

My local pizza shop has an app through which you can place orders for pizza, be it delivery or takeout. It’s clunky: scrolling is janky, the viewport is the aspect ratio of old iPhones before the removal of the physical Home button, the images are visibly pixelated. It works; you can order a pizza and the order goes through, with no provision to cancel & required confirmation info sent to your email, not the app. It merely works.

And when you first open this app, you’re presented with two buttons: Start New Order and Repeat Last Order. Repeat Last Order does exactly what it says, with a single confirmation screen: two taps and something hot and cheesy is destined for your door.

That latter button is literally brilliant. This neighborhood is full of young families and overwhelmed parents. Let me assure you: Repeat Last Order is the sharpest feature this pizza shop could possibly ask for–head and shoulders above the app looking modern or responding more quickly or including your current order status.

What sharp but thin feature could you add to your current work instead of the typical iterative stone-polishing?