What would be beneficial to include on a product description page?

Including reviews of the product on a product description page is highly beneficial because they build trust and provide social proof. Potential customers often rely on the experiences and opinions of others to make purchasing decisions. Positive reviews can validate a product's quality and features, while even constructive negative reviews, when handled well, can show transparency. Previous versions of the product are generally irrelevant to a current purchase decision and can clutter the page. Links to other suppliers would direct potential customers away from your site, which is counterproductive to sales.