When they started mass producing yogurt, it was difficult to blend the flavor with the plain yogurt. So they just squirted in the flavor first. Then some marketing genius declared “Fruit on the Bottom!” was a better kind of yogurt. The problem became the main selling feature.
Another example: It’s hard to store and deliver furniture — it’s the biggest thing people buy other than houses, appliances, and cars. Ikea became the biggest furniture store in the world by letting us assemble our own purchases. The benefit: It’s easier to get home.
What’s your leftover/weird/complex problem that you could turn into a selling benefit?