I think adena autopickup should be included in the game without a doubt as I don't see any downside to it. The only ones who will be impacted negatively from this are looters, that run around popular hunting grounds all day long and pick-up stuff, but they will still have mats, so w/e. It's not like it makes the game "easier", it just saves you a press of a button each time you kill a mob. Luckily we will have it in the upcoming patches as mentioned by @Rizos .