There are also certain classes that you don't have to do the class quests on until later. In a full group set up, most of your classes can just get their first class quest and then be done. Warrior (stances at 10/30) and Shaman (totems at 4/10/20/30) are the only ones with "required" class quests beyond the first one offered around level 10 for a boxing group. In that vein, my opinion is that only the shaman adds a rather burdensome addition to a boxing team. A group of warrior/paladin/priest/mage/warlock, for example, would only need to do Warrior defense stance at 10 and zerk at 30 and Paladin redemption at 12. The rest can easily be ignored until much later when traveling is easier.