1- The unique Identifier should be the UPC, At the very least it should be imported into the item master/data table, Most shopping sites use this as the unique identifier, so user reviews and such can be associated to it.
2- The importer should update existing data, Qty, Descriptions, Price, images, etc, and import new items. It should not have to be 100% reloaded each time... the way it currently runs it shuts down the website for 24 hours.
3- Should maintain the ability for a complete refresh if ever needed.
4- update amazon export to work with new data structure with UPC identifier
5- review SEO functions
6- Provide a way to Identify Active products not listed under active categories