The merchant I got inspiration from for this idea sells hand-made ukuleles from several manufacturers. Each uke is unique in appearance by the nature of each wood type, grain, and sound. So, they created a new listing for each uke with photos and descriptions specific to that uke alone. Once that uke is sold, they archive the product.
Since sold ukes are archived immediately, customers don’t have a chance to leave a review. Even if they did, a review on that individual product wouldn’t do any good – even if we were to sell another of the same model – as that new uke would have a new product listing.
They set up Collections by Brand, Size, and Price.
Why not use metafields to let customers review collections as well in order to have general feedback about a specific product type?
Unleash your creativity here!