Currently we have only a setting to allow product sorting or not - but I've seen a number of posts about changing the default product sorting.
It's quite difficult to change the default display order of products - we need to start in
Libraries\Nop.Core\Domain\Catalog\ProductSortingEnum.cs
it would be useful to have some interface whereby the store owner could decide what order the products were sorted by without having to change the source.
ideally, on the category page, admin would have a checkbox 'allow product sorting'
if selected he would have a grid of the existing product sorting options eg
option display order published
Position 1 no edit
Name: A to Z 2 yes edit
Name: Z to A 3 yes edit
Price: Low to High 4 yes edit
Price: High to Low 5 yes edit
Created on 6 no edit
If only one option was published, then on the store page, the product sorting dropdown would not appear but the published option would be the one used by default