Allow more columns to be viewed in the products page

It would be great to be able to add extra columns in the product list page to view other items like VAT - STORE - SUPPLIER COST - DISCOUNTS APPLIED ETC ETC could have a settings like with the production page where you can select the cog and select columns required.

or an expand button to view more info without having to edit the product where you can view and change pricing etc and click apply