So, I, like many others, aren't that big a fan of the armor abilities in Halo Reach. But I'm also pretty sure that no amount of whining will get them removed from Halo 4, or even if that would be for the better.
What I am saying, is that I could accept armor abilities, and maybe even grow to like them, if they take more of a back seat in Halo 4, sort of like the equipment in Halo 3, only a little better integrated.
Evade, and most of all, sprint, were welcome additions, and I'm pleased to hear that sprint is now a standard ability. It was one of the few things CoD had, that Halo needed.
Gameplay-wise, armor lock, and especially jetpack, are pains. The invisibility one is a little annoying, but it don't bother me much.
But those are not the biggest problems, as far as I'm concerned. What annoys me the most in Halo Reach multiplayer, are the maps, and how they are designed. They aren't bad, most are pretty decent, but they are all very much designed to make the armor abilities central, most noticeably the jetpack.
Pretty much every small-to-mid-sized map in Halo Reach is full of levels and lines-of-sight were you can shoot, but not travel directly between. That is, unless you have one of those cursed jetpacks. (Uncaged, I'm looking at you!)
I see many possibilities for integrating armor abilities in awesome custom games and special gametypes, I just can't possibly imagine it to be for the best to have all of them available in standard playlists like Team Slayer, Arena and Team Doubles. At least not in the state that they are today.
So, these are my two cents on armor abilities, hope I don't appear as yet another whiner, but I really believe we can have our cake and eat it too! Please don not the armor abilities as central as they are in Reach now, especially the jetpack.