I use Excel as the data source for shapes across multiple documents. This master dataset can be updated frequently when working on a document leading to multiple copies of the same spreadsheet. No problem so far, but at the end of the week there can be a lot of copies. The current method requires three clicks per spreadsheet to delete, plus the slight pause waiting for the action to complete.
Having the ability to select files and then delete would be useful, probably also with a select all.