Reduce the cost of [a product]
by [percent]. Rank changes by
saving, say for each whether the
customer would notice, and cut
the ones where they would.

Take Cost Out Without Cheapening It

Ranked by saving, filtered by whether anyone notices.

Prompt

I need to reduce the cost of [a product] by [a percentage]. Propose changes ranked by saving, and for each say whether the customer would notice — and cut the ones where they would.