We've made good progress and have a version of this module running locally and with a client installation. Depending on the content in the import spreadsheet, it can
- import and process main images for multiple products
- import and process additional images for multiple products
- import/update other product information fields which are not included in the core hotcakes product import spreadsheet
It is working well for the immediate needs of the client and we continue to test it. If anyone needs similar, please let me know and we can test it further with you. Otherwise, once we've wrapped up a bit, we will post it for general use by the community.