I won't make any significant changes to JPEGCrops. Instead I'm working on its successor, which will (probably) be named RoboCrop. It will be a complete rewrite, in order to make it possible to do things like red-eye removal and image resize. It will also be freeware and the interface will be roughly the same as JPEGCrops.
Feel free to make suggestions for RoboCrop features or report bugs for JPEGCrops. If you want an answer to a specific problem, send me an email at email@example.com.