I'd like to be able to change which field on a collection determines what the items slug will be, currently it's forced to be "Name". I can't rename the "Name" field to get what I'm looking for either. 

An example: a collection of products, I'd like the url to be the product sku: "...com/product/abc-123", instead of the name "...com/product/my-awesome-product-that-will-change-your-life"