Id almost rather see a dungeon for each class like such. Party setup is regular, but whichever class the dungeon is geared towards needs to show their proficiency in said class. For instance, whm dungeon could be similar to aurum vale where you have poison rooms and such. Make them so you have to show what youve learned about the class.

What im describing would be a combination of a mini-dungeon (could be called ordeal of --------) and something akin to maat.