I want to have all product information imported but I want to be able to override the description of a certain product, but the prices and stock should import like normal.
Just like the new core config values, it would be nice to have a scope above the default scope. This would solve the problem that a Merchant needs to overrides the values on each store-view (which is undoable with a Multi Store Setup).
If the Use Import Values is unchecked the Merchant is able to change the value. A new flag gets created in a new catalog_product_import_export_overrides (or some other table) table. When importing the system checks this table to skip certain import-values.