One of my old paper investigates the link between consumer income levels and coupon redemption, by controlling for shopping basket size and demographics regarding having children in the family

One of my old paper investigates the link between consumer income levels and coupon redemption, by controlling for shopping basket size and demographics regarding having children in the family. [Question] During the revision stage of the journal publication process, one of reviewers suggest that I should try other measurements, such as likelihood of using coupons in each trip, % of products purchased with coupons, and % of savings from coupons on the panel data, with fixed effect as control in the model. Do you agree or disagree with the above statement? Please explain with details.