By AJAX in product list you can edit: Categories,Manufacturer,UPC,Image,Product Name (all languages), the added "UPC","Model", "Price","Special Price" "Quantity","Status", and edit the added "Sort Order".
You can filter by Category, Manufacturer by NULL value.
In product edit form, by ajax, you can upload and assign directly the main image (without file manager).
-- ADDED SPECIAL PRICE EDIT --
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