Add option to cancel workflow, move files to trash automatically on reject
On rejecting, the workflow options are to go back to a previous step or to complete the workflow. However, if you reject, you may want the workflow to end and if the file has been rejected you certainly don't want to save it to the approved files directory (this has happened to us recently and caused a problem with a customer). On rejecting there should be a different option - to cancel the workflow and trash the files or auto-select a "rejected documents trashbin folder" in order to avoid accidentally saving rejected files to an approved files directory. This sounds nuanced but actually I think it is a major missing feature.