[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.

Hmmm, what I was thinking from NxProse's comments was that each of the five weapons on that huge statue would represent like a seal or something that you can break by making a particular class complete a task, and the more you more seals you break, the better reward you get or the easier the rest of the pq becomes, thus fitting in with the "splitting up the party" thing and "most classes," without making every class absolutely necessary.