Crucible Marks. Don't get me wrong, I understand the devs want to attract attention from the PvE players to go into the PvP aspect as stated many, many times before and after launch. Yet, with as many ways there are to boost your Vanguard marks (Dailies, Weekly challenges, etc.) and the fact the playlists are still about as fast as PvP rounds makes it even more abrasive to only see three marks earned consistently, there's currently no other way to cap for the week than to play 50-34 rounds. When compared to the 60 Vanguard given each week by Daily & Weekly challenges it's fairly laughable.