As information starts coming out on videos and fan sites, sanctioned by Bethesda, we're learning a lot. One of the things I find most disturbing is the revelation that grouping appears to be pointless. My wife and I always play through MMOs as a duo and we enjoy running through quests together and the efficiency of both of us getting credit for each other's contribution. But in ESO, if we are given a quest to find 4 Dwarven artifacts, collectively we will have to find 8 before we are both done with the quest. If we are given a quest to incapacitate a guard in order to open a lockbox carrying some quest item, we will have to incapacitate the guard twice, once for each of us. It also appears there are no mob locks, meaning that anyone can help kill a mob we are fighting, whether they are grouped with us or not.
So my wife and I could play through the entire game side by side, without being grouped at all, and have the same result as if we were grouped. So what, then, is the point to grouping?