Amazon is a potent tool for designing next-gen products.
Want to know what product attributes to preserve? Read the 4 & 5 star reviews of your current product.
Want to know what product attributes to improve? Read the 1 & 2 star reviews.
Want to see how and where your product gets used? Look at the reviewers' videos and images.
Want to get a sense of your product's online competitors? Check out the Best Sellers list for your category. Reading the reviews of competitive products doesn't hurt either.
Whatever you do, don't ignore this massive collection of consumer feedback!