It won't work for two reasons: 1. Neither the NSW cup or QLD cup gets enough coverage to draw enough interest to make it viable as a product in it's own right. 2. The NSW cup and QLD cup are run by the NSWRL and QRL respectively, and they are both run by parochial idiots who would spend all of their time trying to dominate the other like it's some great game of SOO instead of working together to create the best league they possibly can. Obviously 1. could change relatively easily, but 2. I'm not so sure about. On the other hand a new national competition run by the NRL (or in a perfect world run by an independent body answerable only to the ARLC) has potential.