Some of the major things it lets you do are pretty much the same "stock" items...but with a twist. Like the pruning. It'll do that, and give you more choices...and the ability to have them all pre-checked. You can do Mass Moves, which I use for pruning mega-threads into a holding area for archival...I use it MOST for username changes since it goes through and changes all instances!!! (OK, it does NOT change the files in PM...but there may be a fix coming!
BEST thing is...as a "hack" it requires NO ACTION FROM YOU except to UPLOAD the file and CHMOD it!!! Of course, I went a step further and edited my cplinks.html file so I can call it from the CP...but that isn't needed!! No code hacking AT ALL!