Improving the duplicate comparison method

Right now you can only search for duplicate files with either filename & filesize or md5. This is not enough! I want to be able to search only files which have the same filename, nothing else.

The comparison method section could be a list of checkboxes:

[] filename
[] filesize
[] filetype
[] creation date
etc.

Also, someone could find it useful to have more options than just md5, like CRC32 and others (which are faster, although not as secure).