A grind is not a good way to keep your player base especially when it has a good chance of paying out absolutely nothing. I'm already sick of the poor systems like this and decent chunk of my friends list is already hoping over to halo 5 and an even larger chunk is ready for black ops 3 zombies or fallout 4. I wouldn't mind the poor drops if they were guaranteed drops but as it is right now the drop rate is garbage and the raid isn't rewarding.