Maybe, and the question of if we should make this change at all is certainly a valid question. I was more pointing out the arguments for post change 'give me, give me'.
On live, at least before the current AA window modernization, AA were unlocked through level/AA count/prereq AAs/and kills-achievements. An example of kill-achivement AAs are Trials of Mata Muram in the Omens of War expansion. (This is the same expansion that introduced the next epic quests 1.5/2.0 and was actually a really fun and well thought out expansion.) I believe the trials were accessed through a zone called Proving Grounds and there were 6 trials. I remember these specifically because doing them on tier was very difficult without the right group setup for each specific trial. I failed at them a lot
EDIT - I forgot leadership AAs that can only be XPed if certain conditions are met. Namely, the character is leader of the group and/or leader of the raid.