I'm no fan of a single express pass, but I wonder if they did offer it on top tier rides like a Hagrid's:
1. Would that push people to get that instead of unlimited, so then putting less people overall into all of the Express queues?
2. Would it be seen as a revnue line (similar to how Disney views it) to justify higher budget points when creating new rides?
Either way, $25 for Mummy or Kong is ridiculous. They'd definitely have to tinker with the options.