Love the utility of this tool, but one thing that would make it easier to use on large groups of files would be to have an additional block in the Selections box that would allow you to restrict the selections by a pattern. Keeping the current filter entry as the include selection and having a new filter entry for excluding files. For instance I often want to include all files of a certain type, but exclude those that I have already renamed properly, which would either have some particular string in the file name or comply with a particular patter (so having the filters accept regex would be ideal, but just simple wild cards with string would help immensely).
Thanks much for the tool.