I admit that I didn't like the sprint ability (sorry dude) because I'm not very good with it and when I use it I somehow run into more covenant. I liked the armor lock and drop shield ability best I'm good with those, and the drop shield is just like the bubble shield just it heals you (if you didn't know that) where as the bubble shield just protected you from gun fire and explosives. My point is that in halo 4 I only want the armor lock and drop shield abilities as well as completely new abilities.