I only have one complaint. I WISH that the Defenders would attack someone attacking them if they don't have a current target. Nothing makes me groan more than watching a group of melee Defenders having this exchange: "Hey, Bob. See that guy shooting us?" "I don't know what you're talking about. All I see is SHUT UP FRANK!" Maybe I'm being picky, but that bothers me whenever I run into it. It's just frustrating. You can deal with it by moving them back, then forward again. But, it's not actually adding any meaningful gameplay. It's just causing headaches for the player.