Because there are so many games that are dumped in different languages i'd recommend that games have their numbering schemes changed.
I propose that there be alphabet and numbers used to identify the dumps. For instand 1004.u for USA, 1004.j for JAPAN and 1004.e for EUROPE. This will allow the numbers used to be more reflective of how many games that are actually available. Plus it removes the annoyance of finding out that a new release is simply an old release of another region.