Heya guys i wanted to contribute so i threw a video together of how you can kill elites in act 3 pretty easily.
This is on the siege breaker quest. After doing the farming technique in the video and after I get a few stacks I check the chest in the keep level 1 and in the forward barracks (located on the battle fields). You can choose another quest to checkpoint instead of running but i prefer doing this way so i can get tyreal to help me clear mobs if im ever in trouble. There is also a high chance for a treasure goblin and there is always at least 1 elite pack on the map (highest ive killed on the same map was 4). The chest is not a 100% spawn there are 3 variations of the map and when u do get the map with the balcony there can be adds with no chest, no adds no chest and no adds but with a chest a chest.
Hope you guys enjoy it and happy hunting.
Diablo III Act 3 Inferno Farming Elites - YouTube