Subcategories are a wonderful idea now that I've pondered a bit. It enables all duplo animals from being mixed with small lego animals and animal parts from being mixed with complete animals. However, I do have one concern and that is the order of category-subcategory words.
Say for example that the animals category could have a subcategory for duplo and the duplo category could have a subcategory for animal. One possibility is to expand the categories so that one would select "duplo animal" as the category.
Say for example that the animals category could have a subcategory for duplo and the duplo category could have a subcategory for animal. One possibility is to expand the categories so that one would select "duplo animal" as the category.