What's one feature in your product that could be its own product?

I'm launching a personalised storybook for grandparents tomorrow, and somewhere along the way one feature grew bigger than I expected.

Every page is an AI illustration, and some of the people reviewing them are in their seventies, eighties or beyond. Now these guys are my main audience but its clear that they are a secondary target group. They have never written a prompt and possibly never will. Early on I gave them a text box and a few dropdowns to describe what was wrong with a picture, and it didn't work. They knew exactly what was wrong but couldn't put it into words a model would understand. Explaining that the person with brown hair should look shorter is fine if there is only one person with brown hair, but the second a picture with any kind of complexity to it is being looked at, things can bread down quickly. For someone adept at this, a bit of patience and clearer instruction works just fine, but if you are creating a consumer facing product with greenhorns, you HAVE to make it easy for them.

The thing that finally worked was letting them circle it. You highlight the bit of the image you don't like, say a few words or nothing at all, and the rest is handled behind the scenes. It turns out "where" is the hard part for most people, and once that is separated from "what", the editing becomes almost effortless.

It's now so developed that I half wonder whether it should be its own thing, either open sourced or offered as a service to other products that need non-technical people to fix images.

Curious what yours is.

What feature have you built that accidentally might become the product?