I figured out a way to farm the mounts that drop in AQ40 very easily and you don't need a lot of people to do it, in fact, all you need is someone who wears plate, preferably a tank!
Basically, all you do is zone in with your friend, kill the roaming one mob pat and the first pull you come to is a 4 pull of big dudes. Simply start the pull, and bring them back a little bit and kill all but one of them.
When only one is left alive, zone out. Then zone back in. Viola! The 4 pull has respawned in its entirety and there are three corpses to loot as well.
Recycle, rinse, repeat - Untill you have all mounts. I was able to get Blue, Yellow, and Green mounts within 10 minutes. Red mount will take some time to farm.
Why is this useful? Ask anyone who is trying to farm the "Mountain 'O Mounts" achievement.