PayPal/Shop questions

A Perch/PayPal shop that I've created, contains around 90 products. When I display a list (Apps/Shop/Products) they appear to be in reverse alphabetical order (Z to A). I can't see a way of changing this, so I'm wondering if I've missed something? If I select by category, they are in normal alphabetic order of A to Z.

Assuming this can't be changed, or its a bug, can the admin for the add-on be enhanced to turn the headings of Product/Price/Quantity into links that could be clicked to change the sort order?

Could a new field of 'slug' be added, with this being sortable too. We used the product code as a slug, and it would be much easier to find/click products to edit if the slug was visible in the product list in admin.

Thanks, Graham