With regards to Destiny having a quicker firefight resolution speed than Halo, that's absolutely neccessary for the success of the game. The main problem that prevents Destiny from having kill times more akin to some of the latest Halo games is that every Guardian, regardless of class or focus, will have access to sprint and some form of a double jump, depending on focus. That's a ton more mobillity than we ever had in Halo Reach or Halo 3, which is great; snappy mobillity allows for snappy maneuvers which leads to some really exciting and dynamic encounters. ...Unless that is you use that mobillity to run the hell away from fights as soon as they go south. Then things get frustrating, because as Lars put it, Kill Resolution is a ton of fun. So it makes total sense for Bungie to twiddle the balance knobs in a way to make Destiny faster than Halo. But how much faster should it be? As you point out in your original post, it's not very fun when the gameplay is so fast that you can't react to an attack or whoever shoots first usually wins, and from what I've heard and read Bungie isn't shooting for that type of experience. It's a balancing act obviously, but I'm thinking that Destiny will shy closer to things like Halo 2 and Halo CE rather than Call of Duty. The point is making it fast enough so that people feel that standing their ground and fighting to overcome a slight disadvantage is more productive than trying to escape. And this isn't to say that players shouldn't be allowed to escape from any firefight once it starts, just that it shouldn't be the standard go-to strategy because that would just be silly. The headshots concern is a good point, it's something I've thought of previously but never really voiced on the forums, and I don't have enough information yet to really know to what degree it will actually be a problem or have a nice explanation for why Bungie might be doing what they are doing. My hope is that all weapons will critical hit on headshots, regardless of whether you're using a Pulse Rifle, a Scout Rifle, an Auto Rifle, Shotgun, Rocket, whatever. Though at the end of the day, the skill cap of a Shooter does not live or die based on how much emphasis you put on head shots, at best it raises the skill floor for competition. So long as the precision weapons (Pulse Rifle, Scout Rifle, Handcannon, Sniper) emphasize headshots then that should be enough, but I just don't see a reason this time around why things like the Auto Rifle shouldn't either. It's okay if you're still concerned about skill in Destiny, I just wanted to try to perhaps explain some of their decisions with my imperfect perspective.