We ran an evening studio session on a question we keep arguing about internally: can a store feature earn its place without slowing everything around it?

The short answer is yes, but only if you count the cost. Every add-on buys attention with weight, and most teams never put the two on the same scale. A pop-up that lifts conversion two percent and page weight thirty is not a win.

We walked through three features we have shipped, including one we later removed, and showed the numbers behind each decision.

The room pushed back hardest on measurement, which was the point. Slides are shared with attendees on request.