I actually like some of them, we need sprint as default where we get it every game, and make them a one time use, and the when you dye you get it again. Also make something that cancels out armor lock.
Call me a grizzled ancient (bungie reference) but I have been playing Halo since day 1 yea, November 15, 2001. My fav map from halo CE is blood gulch, halo 2 is ivory tower, halo 3 sandbox, halo reach sword base!
If you preorder the game, you will get the grunts funeral school. What it does is, when you kill a grunt 3 seconds later it will blow up like a plasma grenade. Also you get the master chief outfit for your avatar.