Overall I don't hate the AA's themselves but I find the changes that were made to the default run speed and jump height to be very frustrating. One of the best things about Halo was the movement around the maps and using jumps to quickly get around. Now if you don't use sprint you have to use stairs/ramps all the time unless you choose jet pack but then your a snail while on foot. The AA's will be back in H4 I just hope they can combine them with the Halo "feel" that isn't present in Reach.