[Archive] The Unveiling of Masteria

I'm thinking it's more likely that there are several different paths you can go through the PQ, and depending on which classes you bring, different doors will be openable. (this fits the "unique each time" and the "each class is useful" criteria). For example, let's say in stage 1 there are 2 doors to 2 different stage 2's, one which can only be reached by flash jump and one that can only be reached by teleport. Both doors have an NPC which you must be really close to talk to (like in the invisible Magatia JQ) so you can't just click it from afar. Depending on which party members you have, you can take either path, and then you'll have a completely different stage 2 through the FJ door than the Teleport door. The alternate paths would converge at certain points to ensure that everyone has to go through those.

This fits in with what prose said about rooms being within the maps as well, which made me surprised when he said it was only 10+ maps, but if the sub-class's rooms are branched within each main class's respective room, then it'd actually be okay.