I'm in the throes of putting together a Wherigo cartrige loosely based on the TV show "The Crystal Maze". Basically there will be one Wherigo cartridge which eventually generates a score. The score will be (effectively) good, average or poor. Depending on which score you get you'll then get directed to one of three potential final caches. (The idea being the higher score you get the higher the difficulty rating of the final cache). And there would be nothing stopping people doing the cartridge three or more times to get all three caches.
One cartridge - three distinct caches each with its own listing. I don't see anything in the rules against this. Is this OK as a concept?