I've been pretty baffled as to the purpose of this quest, and the lack of information on Wowhead (other than people posting "I'm an [X Class] and managed to pick up the [Y Class] version before I was kicked out of their order hall," which isn't super helpful). I first noticed this quest as being available just after I recruited Aethas, which starts with Champions of Legionfall/An Urgent Situation and ends with Champion: Aethas Sunreaver. I've completed the class hall campaign, have 8 level 110 champions, and have researched all the upgrades for the class hall through Tier 6 (extra legendary equip). This quest just consisted of me running across the room, opening the class hall research window, and then running back across the room without having accomplished anything or seeing any dialog. It is unclear if this quest used to do something, or just required me to have done something I've already done, but it was a strange and pointless exercise to make 10 gold.